Adulteress (3428) (moichalis related to moichos = "married and impure", literally adulterer, "unlawful" lover, 1Co 6:9, He 13:4, Lk 18:11; Lxx = Job 24:15, Pr 6:32) pertains to being unfaithful to one to whom one should remain faithful and here is used literally of a wife who does not remain faithful to her husband. Figuratively moichalis is used to describe one who is unfaithful (in Lxx of His "wife" Israel [cp Je 2:2, Je 3:14, Je 3:14KJV, Je 3:14NIV, Je 31:32, Isa 54:5, Ho 2:16YLT] Ezek 16:38, 23:45) toward God even as an adulteress is unfaithful toward her husband (Mt 12:39, 16:4, Mk 8:38 - observe how Jesus links adulterous with evil and sinful and the serious consequences for this state of unfaithfulness!) Moichalis occurs in 6v in the NAS... Matthew 12:39 But He answered and said to them, "An evil and adulterous generation craves for a sign; and yet no sign shall be given to it but the sign of Jonah the prophet; Matthew 16:4 "An evil and adulterous generation seeks after a sign; and a sign will not be given it, except the sign of Jonah." And He left them, and went away. Mark 8:38 "For whoever is ashamed of Me and My words in this adulterous and sinful generation, the Son of Man will also be ashamed of him when He comes in the glory of His Father with the holy angels." Romans 7:3 So then if, while her husband is living, she is joined to another man, she shall be called an adulteress; but if her husband dies, she is free from the law, so that she is not an adulteress, though she is joined to another man. James 4:4 You adulteresses (noun although feminine applies to spiritually unfaithful women and men; anything before God = an idol and leads to unfaithfulness to the one true and faithful God), do you not know that friendship with the world is hostility toward God? Therefore whoever wishes to be a friend of the world makes himself an enemy of God. 2 Peter 2:14 having eyes full of adultery (i.e. always on the lookout for a woman with whom to commit adultery - be aware of these subtle, smooth, slimy snakes in the ministry beloved - Peter warns us!) and that never cease from sin, enticing unstable souls, having a heart trained in greed (an incredible statement - literally "trained" = gymnazo = work out in the gym and in the perfect tense = their permanent state), accursed children; Moichalis is used 6x in the non-apocryphal Septuagint (LXX) - Prov. 18:22; 30:20; Ezek. 16:38; 23:45; Hos. 3:1; Mal. 3:5 Proverbs 30:20 This is the way of an adulterous (Heb = naaph; Lxx = moichalis) woman: She eats and wipes her mouth, And says, "I have done no Ezekiel 16:38 "Thus I shall judge you, like women who commit adultery (Heb = naaph; Lxx = moichalis) or shed blood are judged; and I shall bring on you the blood of wrath and jealousy. Ezekiel 23:45 "But they, righteous men, will judge them with the judgment of adulteresses (Heb = naaph; Lxx = moichalis), and with the judgment of women who shed blood, because they are adulteresses and blood is on their hands. Hosea 3:1 Then the LORD said to me, "Go again, love a woman who is loved by her husband, yet an adulteress (Heb = naaph; Lxx = moichalis), even as the LORD loves the sons of Israel, though they turn to other gods and love raisin cakes." Malachi 3:5 "Then I will draw near to you for judgment; and I will be a swift witness against the sorcerers and against the adulterers (Heb = naaph; Lxx = moichalis) and against those who swear falsely, and against those who oppress the wage earner in his wages, the widow and the orphan, and those who turn aside the alien, and do not fear Me," says the LORD of hosts.