Leviticus 20:14
Leviticus 20:14 in Multiple Translations
If a man marries both a woman and her mother, it is depraved. Both he and they must be burned in the fire, so that there will be no depravity among you.
And if a man take a wife and her mother, it is wickedness: they shall be burnt with fire, both he and they; that there be no wickedness among you.
And if a man take a wife and her mother, it is wickedness: they shall be burnt with fire, both he and they; that there be no wickedness among you.
And if a man takes as wife a woman and her mother, it is an act of shame; let them be burned with fire, all three of them, so that there may be no shame among you.
A man who marries both a woman and her mother has acted perversely. They must all be burned to death so that there will be no such wickedness among you.
Likewise he that taketh a wife and her mother, committeth wickednesse: they shall burne him and them with fire, that there be no wickednes among you.
'And a man who taketh the woman and her mother — it [is] wickedness; with fire they burn him and them, and there is no wickedness in your midst.
“‘If a man takes a wife and her mother, it is wickedness. They shall be burned with fire, both he and they, that there may be no wickedness among you.
And if a man shall take a wife and her mother, it is wickedness: they shall be burnt with fire, both he and they: that there be no wickedness among you.
If any man after marrying the daughter, marry her mother, he hath done a heinous crime: he shall be burnt alive with them: neither shall so great an abomination remain in the midst of you.
‘If a man marries both a woman and her mother, that is a wicked thing. All three of them must be burned to death, in order that such a wicked practice will not continue to be done among you.
Berean Amplified Bible — Leviticus 20:14
BAB
Word Study
Hover over any word to see its amplified meaning. Click a word to explore its full definition and translation comparisons.
Amplified text is generated using scripting to tie together English translations for comparison. Always refer to the core BSB translation and original Hebrew/Greek text for accuracy. Anomalies may occur.
Leviticus 20:14 Interlinear (Deep Study)
BIB
HEB
וְ/אִ֗ישׁ
אֲשֶׁ֨ר
יִקַּ֧ח
אֶת
אִשָּׁ֛ה
וְ/אֶת
אִמָּ֖/הּ
זִמָּ֣ה
הִ֑וא
בָּ/אֵ֞שׁ
יִשְׂרְפ֤וּ
אֹת/וֹ֙
וְ/אֶתְ/הֶ֔ן
וְ/לֹא
תִהְיֶ֥ה
זִמָּ֖ה
בְּ/תוֹכְ/כֶֽם
וְ/אִ֗ישׁ
ʼîysh
H376
man
Conj | N-ms
אֲשֶׁ֨ר
ʼăsher
H834
which
Rel
יִקַּ֧ח
lâqach
H3947
to take
V-Qal-Imperf-3ms
אֶת
ʼêth
H853
Obj.
DirObjM
אִשָּׁ֛ה
ʼishshâh
H802
woman
N-fs
וְ/אֶת
ʼêth
H853
Obj.
Conj | DirObjM
אִמָּ֖/הּ
ʼêm
H517
mother
N-fs | Suff
זִמָּ֣ה
zimmâh
H2154
wickedness
N-fs
הִ֑וא
hûwʼ
H1931
he/she/it
Pron
בָּ/אֵ֞שׁ
ʼêsh
H784
fire
Prep | N-cs
יִשְׂרְפ֤וּ
sâraph
H8313
to burn
V-Qal-Imperf-3mp
אֹת/וֹ֙
ʼêth
H853
Obj.
DirObjM | Suff
וְ/אֶתְ/הֶ֔ן
ʼêth
H853
Obj.
Conj | DirObjM | Suff
וְ/לֹא
lôʼ
H3808
not
Conj | Part
תִהְיֶ֥ה
hâyâh
H1961
to be
V-Qal-Imperf-3fs
זִמָּ֖ה
zimmâh
H2154
wickedness
N-fs
בְּ/תוֹכְ/כֶֽם
tâvek
H8432
midst
Prep | N-ms | Suff
Hebrew Word Study
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Hebrew Word Reference — Leviticus 20:14
וְ/אִ֗ישׁ
ʼîysh
H376
"man"
Conj | N-ms
The Hebrew word for man, referring to a male person or individual, is used in the Bible to describe humans in contrast to God or animals, as seen in Genesis and Psalms. It can also mean husband or servant. In the KJV, it is translated as man or male.
Definition: : man 1) man 1a) man, male (in contrast to woman, female) 1b) husband 1c) human being, person (in contrast to God) 1d) servant 1e) mankind 1f) champion 1g) great man 2) whosoever 3) each (adjective)
Usage: Occurs in 1851 OT verses. KJV: also, another, any (man), a certain, [phrase] champion, consent, each, every (one), fellow, (foot-, husband-) man, (good-, great, mighty) man, he, high (degree), him (that is), husband, man(-kind), [phrase] none, one, people, person, [phrase] steward, what (man) soever, whoso(-ever), worthy. Compare H802 (אִשָּׁה). See also: Genesis 2:23; Genesis 42:25; Exodus 32:23.
אֲשֶׁ֨ר
ʼăsher
H834
"which"
Rel
This Hebrew word is a conjunction that connects ideas and events in the Bible, like in the book of Genesis, where it's used to describe the relationship between God and His creation.
Definition: A: 1) (relative part.) 1a) which, who 1b) that which 2) (conj) 2a) that (in obj clause) 2b) when 2c) since 2d) as 2e) conditional if B: Beth+ 1) in (that) which 2) (adv) 2a) where 3) (conj) 3a) in that, inasmuch as 3b) on account of C: Mem+ 1) from (or than) that which 2) from (the place) where 3) from (the fact) that, since D: Kaph+ 1) (conj.), according as, as, when 1a) according to that which, according as, as 1b) with a causal force: in so far as, since 1c) with a temporal force: when
Usage: Occurs in 4440 OT verses. KJV: [idiom] after, [idiom] alike, as (soon as), because, [idiom] every, for, [phrase] forasmuch, [phrase] from whence, [phrase] how(-soever), [idiom] if, (so) that ((thing) which, wherein), [idiom] though, [phrase] until, [phrase] whatsoever, when, where ([phrase] -as, -in, -of, -on, -soever, -with), which, whilst, [phrase] whither(-soever), who(-m, -soever, -se). As it is indeclinable, it is often accompanied by the personal pronoun expletively, used to show the connection. See also: Genesis 1:7; Genesis 20:9; Genesis 31:16.
יִקַּ֧ח
lâqach
H3947
"to take"
V-Qal-Imperf-3ms
This Hebrew word means to take or get something, and it is used in many different ways in the Bible. It can mean to take a wife, to take possession of something, or to receive a gift. For example, in Genesis 2:22, God takes a rib from Adam to create Eve.
Definition: : take 1) to take, get, fetch, lay hold of, seize, receive, acquire, buy, bring, marry, take a wife, snatch, take away 1a) (Qal) 1a1) to take, take in the hand 1a2) to take and carry along 1a3) to take from, take out of, take, carry away, take away 1a4) to take to or for a person, procure, get, take possession of, select, choose, take in marriage, receive, accept 1a5) to take up or upon, put upon 1a6) to fetch 1a7) to take, lead, conduct 1a8) to take, capture, seize 1a9) to take, carry off 1a10) to take (vengeance) 1b) (Niphal) 1b1) to be captured 1b2) to be taken away, be removed 1b3) to be taken, brought unto 1c) (Pual) 1c1) to be taken from or out of 1c2) to be stolen from 1c3) to be taken captive 1c4) to be taken away, be removed 1d) (Hophal) 1d1) to be taken unto, be brought unto 1d2) to be taken out of 1d3) to be taken away 1e) (Hithpael) 1e1) to take hold of oneself 1e2) to flash about (of lightning)
Usage: Occurs in 909 OT verses. KJV: accept, bring, buy, carry away, drawn, fetch, get, infold, [idiom] many, mingle, place, receive(-ing), reserve, seize, send for, take (away, -ing, up), use, win. See also: Genesis 2:15; Genesis 34:17; Exodus 30:23.
אֶת
ʼêth
H853
"Obj."
DirObjM
In the original Hebrew, this word points out the object of a verb or preposition, like 'namely' or 'even'. It appears in many books, including Genesis and Exodus. It's not directly translated in English, but helps clarify the meaning of sentences.
Definition: sign of the definite direct object, not translated in English but generally preceding and indicating the accusative Aramaic equivalent: yat (יָת "whom" H3487)
Usage: Occurs in 6782 OT verses. KJV: (as such unrepresented in English). See also: Genesis 1:1; Genesis 10:8; Genesis 19:21.
אִשָּׁ֛ה
ʼishshâh
H802
"woman"
N-fs
The Hebrew word for woman, used to describe a female person, wife, or animal, appears in many biblical passages, including Genesis and Exodus, and is often translated as woman, wife, or female.
Definition: : woman 1) woman, wife, female 1a) woman (opposite of man) 1b) wife (woman married to a man) 1c) female (of animals) 1d) each, every (pronoun)
Usage: Occurs in 686 OT verses. KJV: (adulter) ess, each, every, female, [idiom] many, [phrase] none, one, [phrase] together, wife, woman. Often unexpressed in English. See also: Genesis 2:22; Genesis 34:4; Numbers 5:12.
וְ/אֶת
ʼêth
H853
"Obj."
Conj | DirObjM
In the original Hebrew, this word points out the object of a verb or preposition, like 'namely' or 'even'. It appears in many books, including Genesis and Exodus. It's not directly translated in English, but helps clarify the meaning of sentences.
Definition: sign of the definite direct object, not translated in English but generally preceding and indicating the accusative Aramaic equivalent: yat (יָת "whom" H3487)
Usage: Occurs in 6782 OT verses. KJV: (as such unrepresented in English). See also: Genesis 1:1; Genesis 10:8; Genesis 19:21.
אִמָּ֖/הּ
ʼêm
H517
"mother"
N-fs | Suff
The Hebrew word for 'mother' is used in the Bible to describe a female parent or a maternal figure. It can also refer to the source or origin of something, such as a river or a family. In some cases, it is used figuratively to describe a person's relationship to others.
Definition: 1) mother 1a) of humans 1b) of Deborah's relationship to the people (fig.) 1c) of animals 2) point of departure or division
Usage: Occurs in 202 OT verses. KJV: dam, mother, [idiom] parting. See also: Genesis 2:24; 2 Kings 4:19; Psalms 22:10.
זִמָּ֣ה
zimmâh
H2154
"wickedness"
N-fs
This Hebrew word refers to a wicked or evil plan, and can include things like adultery, incest, and idolatry. It is used to describe the bad intentions or schemes of people in the Bible.
Definition: 1) plan, device, wickedness, evil plan, mischievous purpose 1a) plan, purpose 1b) evil device, wickedness 1c) not chaste, incest, licentiousness, adultery, idolatry, harlotry
Usage: Occurs in 27 OT verses. KJV: heinous crime, lewd(-ly, -ness), mischief, purpose, thought, wicked (device, mind, -ness). See also: Leviticus 18:17; Ezekiel 16:27; Psalms 26:10.
הִ֑וא
hûwʼ
H1931
"he/she/it"
Pron
This word is a pronoun meaning 'he', 'she', or 'it', used to refer to a person or thing. It is used in the Bible to emphasize a subject or make it clear who is being talked about.
Definition: pron 3p s 1) he, she, it 1a) himself (with emphasis) 1b) resuming subj with emphasis 1c) (with minimum emphasis following predicate) 1d) (anticipating subj) 1e) (emphasising predicate) 1f) that, it (neuter) demons pron 2) that (with article)
Usage: Occurs in 1693 OT verses. KJV: he, as for her, him(-self), it, the same, she (herself), such, that (...it), these, they, this, those, which (is), who. See also: Genesis 2:11; Genesis 32:19; Exodus 21:3.
בָּ/אֵ֞שׁ
ʼêsh
H784
"fire"
Prep | N-cs
Fire is a powerful symbol in the Bible, representing both God's anger and his refining presence, as seen in Deuteronomy 4:24 and Malachi 3:2-3. It is also used for cooking and warmth. This concept is central to many biblical stories.
Definition: 1) fire 1a) fire, flames 1b) supernatural fire (accompanying theophany) 1c) fire (for cooking, roasting, parching) 1d) altar-fire 1e) God's anger (fig.) Aramaic equivalent: esh (אֶשָּׁא "fire" H0785)
Usage: Occurs in 348 OT verses. KJV: burning, fiery, fire, flaming, hot. See also: Genesis 15:17; Joshua 7:15; Psalms 11:6.
יִשְׂרְפ֤וּ
sâraph
H8313
"to burn"
V-Qal-Imperf-3mp
This Hebrew word means to set something on fire, and is used in the Bible to describe burning or kindling flames, like in Psalm 83:14. It can also mean to utterly destroy something. The word is related to fire and burning, and is used in various forms throughout the Old Testament.
Definition: 1) to burn 1a) (Qal) to burn 1b) (Niphal) to be burned 1c) (Piel) burner, burning (participle) 1d) (Pual) to be burnt up, be burned Also means: sa.raph (סָרַף "to burn" H5635)
Usage: Occurs in 107 OT verses. KJV: (cause to, make a) burn((-ing), up) kindle, [idiom] utterly. See also: Genesis 11:3; 1 Kings 13:2; Psalms 46:10.
אֹת/וֹ֙
ʼêth
H853
"Obj."
DirObjM | Suff
In the original Hebrew, this word points out the object of a verb or preposition, like 'namely' or 'even'. It appears in many books, including Genesis and Exodus. It's not directly translated in English, but helps clarify the meaning of sentences.
Definition: sign of the definite direct object, not translated in English but generally preceding and indicating the accusative Aramaic equivalent: yat (יָת "whom" H3487)
Usage: Occurs in 6782 OT verses. KJV: (as such unrepresented in English). See also: Genesis 1:1; Genesis 10:8; Genesis 19:21.
וְ/אֶתְ/הֶ֔ן
ʼêth
H853
"Obj."
Conj | DirObjM | Suff
In the original Hebrew, this word points out the object of a verb or preposition, like 'namely' or 'even'. It appears in many books, including Genesis and Exodus. It's not directly translated in English, but helps clarify the meaning of sentences.
Definition: sign of the definite direct object, not translated in English but generally preceding and indicating the accusative Aramaic equivalent: yat (יָת "whom" H3487)
Usage: Occurs in 6782 OT verses. KJV: (as such unrepresented in English). See also: Genesis 1:1; Genesis 10:8; Genesis 19:21.
וְ/לֹא
lôʼ
H3808
"not"
Conj | Part
The Hebrew word for not or no is used to indicate absence or negation, as when God says no to the Israelites' requests, or when they disobey His commands.
Definition: 1) not, no 1a) not (with verb-absolute prohibition) 1b) not (with modifier-negation) 1c) nothing (subst) 1d) without (with particle) 1e) before (of time) Aramaic equivalent: la (לָא "not" H3809)
Usage: Occurs in 3967 OT verses. KJV: [idiom] before, [phrase] or else, ere, [phrase] except, ig(-norant), much, less, nay, neither, never, no((-ne), -r, (-thing)), ([idiom] as though...,(can-), for) not (out of), of nought, otherwise, out of, [phrase] surely, [phrase] as truly as, [phrase] of a truth, [phrase] verily, for want, [phrase] whether, without. See also: Genesis 2:5; Genesis 31:15; Exodus 4:9.
תִהְיֶ֥ה
hâyâh
H1961
"to be"
V-Qal-Imperf-3fs
The Hebrew word for to be means to exist or come into being. It is used to describe something that happens or comes to pass, like in Genesis where God creates the world.
Definition: 1) to be, become, come to pass, exist, happen, fall out 1a) (Qal) 1a1) --- 1a1a) to happen, fall out, occur, take place, come about, come to pass 1a1b) to come about, come to pass 1a2) to come into being, become 1a2a) to arise, appear, come 1a2b) to become 1a2b1) to become 1a2b2) to become like 1a2b3) to be instituted, be established 1a3) to be 1a3a) to exist, be in existence 1a3b) to abide, remain, continue (with word of place or time) 1a3c) to stand, lie, be in, be at, be situated (with word of locality) 1a3d) to accompany, be with 1b) (Niphal) 1b1) to occur, come to pass, be done, be brought about 1b2) to be done, be finished, be gone
Usage: Occurs in 3131 OT verses. KJV: beacon, [idiom] altogether, be(-come), accomplished, committed, like), break, cause, come (to pass), do, faint, fall, [phrase] follow, happen, [idiom] have, last, pertain, quit (one-) self, require, [idiom] use. See also: Genesis 1:2; Genesis 17:4; Genesis 36:11.
זִמָּ֖ה
zimmâh
H2154
"wickedness"
N-fs
This Hebrew word refers to a wicked or evil plan, and can include things like adultery, incest, and idolatry. It is used to describe the bad intentions or schemes of people in the Bible.
Definition: 1) plan, device, wickedness, evil plan, mischievous purpose 1a) plan, purpose 1b) evil device, wickedness 1c) not chaste, incest, licentiousness, adultery, idolatry, harlotry
Usage: Occurs in 27 OT verses. KJV: heinous crime, lewd(-ly, -ness), mischief, purpose, thought, wicked (device, mind, -ness). See also: Leviticus 18:17; Ezekiel 16:27; Psalms 26:10.
בְּ/תוֹכְ/כֶֽם
tâvek
H8432
"midst"
Prep | N-ms | Suff
This word refers to the middle or center of something, such as a group of people or a physical space. It can also mean among or between things, as seen in various Bible translations.
Definition: 1) midst, middle 1a) midst, middle 1b) into, through (after verbs of motion) 1c) among (of a number of persons) 1d) between (of things arranged by twos) 1e) from among (as to take or separate etc)
Usage: Occurs in 390 OT verses. KJV: among(-st), [idiom] between, half, [idiom] (there-, where-), in(-to), middle, mid(-night), midst (among), [idiom] out (of), [idiom] through, [idiom] with(-in). See also: Genesis 1:6; Numbers 35:5; 2 Chronicles 32:4.
Study Notes — Leviticus 20:14
Show Verse Quote Highlights
- Context
- Cross References
- Leviticus 20:14 Summary
- Frequently Asked Questions
- Reflection Questions
- Gill's Exposition on Leviticus 20:14
- Jamieson-Fausset-Brown on Leviticus 20:14
- Matthew Poole's Commentary on Leviticus 20:14
- Trapp's Commentary on Leviticus 20:14
- Ellicott's Commentary on Leviticus 20:14
- Adam Clarke's Commentary on Leviticus 20:14
- Cambridge Bible on Leviticus 20:14
- Barnes' Notes on Leviticus 20:14
- Whedon's Commentary on Leviticus 20:14
Context — Punishments for Sexual Immorality
12If a man lies with his daughter-in-law, both must surely be put to death. They have acted perversely; their blood is upon them.
13If a man lies with a man as with a woman, they have both committed an abomination. They must surely be put to death; their blood is upon them.
14If a man marries both a woman and her mother, it is depraved. Both he and they must be burned in the fire, so that there will be no depravity among you.
15If a man lies carnally with an animal, he must be put to death. And you are also to kill the animal. 16If a woman approaches any animal to mate with it, you must kill both the woman and the animal. They must surely be put to death; their blood is upon them.Cross References
| Reference | Text (BSB) | |
|---|---|---|
| 1 | Leviticus 18:17 | You must not have sexual relations with both a woman and her daughter. You are not to marry her son’s daughter or her daughter’s daughter and have sexual relations with her. They are close relatives; it is depraved. |
| 2 | Deuteronomy 27:23 | ‘Cursed is he who sleeps with his mother-in-law.’ And let all the people say, ‘Amen!’ |
| 3 | Joshua 7:15 | The one who is caught with the things devoted to destruction must be burned, along with all that belongs to him, because he has transgressed the covenant of the LORD and committed an outrage in Israel.’” |
| 4 | Amos 2:7 | They trample on the heads of the poor as on the dust of the earth; they push the needy out of their way. A man and his father have relations with the same girl and so profane My holy name. |
| 5 | Leviticus 21:9 | If a priest’s daughter defiles herself by prostituting herself, she profanes her father; she must be burned in the fire. |
| 6 | Joshua 7:25 | “Why have you brought this trouble upon us?” said Joshua. “Today the LORD will bring trouble upon you!” And all Israel stoned him to death. Then they stoned the others and burned their bodies. |
Leviticus 20:14 Summary
Leviticus 20:14 is talking about a very serious sin where a man marries both a woman and her mother, which is against God's laws. This sin is so bad that the Bible says the people involved should be punished severely, as a way of showing how much God hates sin (see also Deuteronomy 22:30). We can learn from this verse that God wants us to respect and honor the relationships He has created, and that sin has serious consequences (as seen in Romans 1:24-27). By following God's laws and seeking to live a life that is pleasing to Him, we can avoid the consequences of sin and live a life that is honorable and righteous.
Frequently Asked Questions
What is the nature of the sin being described in Leviticus 20:14?
The sin being described in Leviticus 20:14 is a form of incest, where a man marries both a woman and her mother, which is considered depraved and worthy of severe punishment, as seen in other scriptures such as Deuteronomy 22:30 and Ezekiel 22:11.
Why is the punishment for this sin so severe?
The punishment for this sin is severe because it is a violation of God's created order and a form of rebellion against His laws, as stated in Leviticus 18:29, which warns that those who commit such sins will be cut off from their people.
Is this verse still relevant today?
Yes, this verse is still relevant today because it highlights the importance of upholding God's moral standards and the consequences of sin, as seen in Romans 1:24-27, which describes the consequences of rejecting God's laws.
How does this verse relate to Jesus' teachings?
This verse relates to Jesus' teachings on the importance of honoring one's parents and upholding God's moral laws, as seen in Matthew 15:4 and Mark 7:10, which emphasize the importance of respecting God's commands.
Reflection Questions
- What are some ways in which I can honor God's created order in my own life and relationships?
- How can I be mindful of the consequences of sin and seek to live a life that is pleasing to God?
- What are some ways in which our culture may be tolerating or even promoting sinful behaviors, and how can I stand against such trends?
- How can I seek to uphold God's moral standards in my own life and relationships, even when it is difficult or unpopular?
Gill's Exposition on Leviticus 20:14
And if a man take a wife, and her mother,.... Marry both the one and the other, or commit uncleanness with them, they consenting to it: it [is] wickedness; abominable wickedness, shocking and
Jamieson-Fausset-Brown on Leviticus 20:14
Sanctify yourselves therefore, and be ye holy: for I am the LORD your God. Sanctify yourselves ... and be ye holy.
Matthew Poole's Commentary on Leviticus 20:14
It is wickedness, i.e. abominable and extraordinary wickedness, as the singularity of the punishment showeth. Both he and they; either, or both or all of them, if they consented to it.
Trapp's Commentary on Leviticus 20:14
Leviticus 20:14 And if a man take a wife and her mother, it [is] wickedness: they shall be burnt with fire, both he and they; that there be no wickedness among you. Ver. 14. See on Leviticus 18:1-30.
Ellicott's Commentary on Leviticus 20:14
(14) A wife and her mother.—See Leviticus 18:17. They shall be burnt with fire.—This, as we have seen, is the second of the four modes of capital punishment. (See Leviticus 20:2.) In the following ten cases those guilty of the sins specified suffered this punishment: (1) the unchaste high priest’s daughter (Leviticus 21:9); (2) he who had commerce with his daughter; (3)or with his daughter’s daughter; (4) or with his son’s daughter; (5) or with his wife’s daughter; (6) or with her daughter’s daughter; (7) or with her son’s daughter; (8) or with his mother-in-law; (9) or with the mother of his mother-in-law; and (10), or with the mother of his father-in-law. It will thus be seen that with the exception of the high priest’s daughter this death was only inflicted for incest. As the Bible nowhere states the precise mode in which this kind of death is to be carried out, the authorities during the second Temple maintained that it must be executed in such a manner as to leave the body externally un changed by the flames, because, when God himself inflicted this punishment, the dead bodies of Nadab and Abihu were in a perfect state of preservation. (See Leviticus 10:2.) To effect this the criminal was put into dung up to his knees, a soft cloth containing a hard one was then tied around his throat, while the two witnesses who had secured his sentence drew tighter by the two cords till the criminal opened his mouth, when molten lead was poured down his throat, thus burning him to death. Hence the ancient Chaldee Version renders it here, “they shall be burnt with fire, with melted lead in their mouth.”
Adam Clarke's Commentary on Leviticus 20:14
Verse 14. They shall be burnt with fire] As there are worse crimes mentioned here, (see Leviticus 20:11 and Leviticus 20:17), where the delinquent is ordered simply to be put to death, or to be cut off, it is very likely that the crime mentioned in this verse was not punished by burning alive, but by some kind of branding, by which they were ever after rendered infamous. I need not add that the original, באש ישרפו baesh yishrephu, may, without violence to its grammatical meaning, be understood as above, though in other places it is certainly used to signify a consuming by fire. But the case in question requires some explanation; it is this: a man marries a wife, and afterward takes his mother-in-law or wife's mother to wife also: now for this offence the text says all three shall be burnt with fire, and this is understood as signifying that they shall be burnt alive. Now the first wife, we may safely presume, was completely innocent, and was legally married: for a man may take to wife the daughter if single, or the mother if a widow, and in neither of these cases can any blame attach to the man or the party he marries; the crime therefore lies in taking both. Either, therefore, they were all branded as infamous persons, and this certainly was severe enough in the case of the first wife; or the man and the woman taken last were burnt: but the text says, both he and they; therefore, we should seek for another interpretation of they shall be burnt with fire, than that which is commonly given. Branding with a hot iron would certainly accomplish every desirable end both for punishment and prevention of the crime; and because the Mosaic laws are so generally distinguished by humanity, it seems to be necessary to limit the meaning of the words as above.
Cambridge Bible on Leviticus 20:14
10–21. Directions on the whole similar to those of Lev 18:6-20; Leviticus 18:22-23, but adding penalties for transgression.
Barnes' Notes on Leviticus 20:14
The burning under the sentence of the Law took place after the death of the criminal by stoning, or strangling. Joshua 7:25.
Whedon's Commentary on Leviticus 20:14
14. Burnt with fire — The heinousness of the incest specified in this verse is emphasized by burning the dead bodies of the culprits after they had been stoned.