Adam Clarke Bible Commentary
From all places whence ye shall return unto us - This verse is extremely difficult. Our translators have supplied the words, they will be upon you, which have nothing correspondent in the Hebrew. The Septuagint have given a good sense, Αναβαινουσιν εκ παντων των τοπων εφ' ἡμας, They come up from all places against us. The sense appears to be this: the Jews which dwelt among the Samaritans, etc., came often to Nehemiah from all quarters, where they sojourned, and told him the designs of his enemies against him: therefore, he set people with their swords, spears, and bows, to defend the walls. It is probable that instead of תשובו tashubu, "ye shall return," we should read חשבו chashebu, "they designed or meditated." This word is very similar to the other, and makes the sense very clear. "The Jews who dwelt among them told us frequently, from all places, what they designed against us." For this reading Houbigant, Michaelis and Dath contend. But this various reading is not found in any MS., and is not countenanced by any of the versions. See Neh 4:15.
Carl Friedrich Keil and Franz Delitzsch Old Testament Commentary
When, therefore, the Jews who dwelt near them, i.e., in the neighbourhood of the adversaries, and heard their words, came to Jerusalem, "and said to us ten times (i.e., again and again), that from all places ye must return to us, then I placed," etc. Jews came from all places to Jerusalem, and summoned those who were building there to return home, for adversaries were surrounding the community on all sides: Sanballat and the Samaritans on the north, the Ammonites on the east, the Arabians on the south, and the Philistines (Ashdodites) on the west. אשׁר before תּשׁוּבוּ introduces their address, instead of כּי; being thus used, e.g., before longer speeches, Sa1 15:20; Sa2 1:4; and for כּי generally, throughout the later books, in conformity to Aramaean usage. "Return to us" (על שׁוּב, as in Ch2 30:9, for אל שׁוּב), said the Jews who came from all quarters to Jerusalem to their fellow-townsmen, who from Jericho, Gibeon, and Tekoa (comp. Neh 3:2-3, Neh 3:5, Neh 3:7) were working on the wall of Jerusalem. These words express their fear lest those who were left at home, especially the defenceless women, children, and aged men, should be left without protection against the attacks of enemies, if their able-bodied men remained any longer in Jerusalem to take part in the building of the wall.
Neh 4:13
Neh 4:7 is hardly intelligible. We translate it: Then I placed at the lowest places behind the wall, at the dried-up places, I (even) placed the people, after their families, with their swords, their spears, and their bows. למּקום מתּחתּיּות is a stronger expression for למּקום מתּחת when used to indicate position, and מן points out the direction. The sense is: at the lowest places from behind the wall. בּצּחחים gives the nature of the places where the people were placed with arms. צחיח and צחיחה mean a dry or bare place exposed to the heat of the sun: bare, uncovered, or empty places, perhaps bare hills, whence approaching foes might be discerned at a distance. The second ואעמיד is but a reiteration of the verb, for the sake of combining it with its object, from which the ואעמיד at the beginning of the verse was too far removed by the circumstantial description of the locality.
(Note: Bertheau considers the text corrupt, regarding the word מתּחתּיּות as the object of אעמיד, and alters it into מחשׁבות or חשּׁבנות, engines for hurling missiles (Ch2 26:15), or into מטחיּות (a word of this own invention), instruments for hurling. But not only is this conjecture critically inadmissible, it also offers no appropriate sense. The lxx reads the text as we do, and merely renders בצחחיים conjecturally by ἐν τοῖς σκεπεινοῖς. Besides, it is not easy to see how חשׁבנות could have arisen from a false reading of מתחתיות; and it should be remembered that מחשׁבות does not mean a machine for hurling, while מטחתייות is a mere fabrication. To this must be added, that such machines are indeed placed upon the walls of a fortress to hurl down stones and projectiles upon assaulting foes, and not behind the walls, where they could only be used to demolish the walls, and so facilitate the taking of the town by the enemy.)
John Gill Bible Commentary
Near Samaria, Arabia, and Ashdod, and had intelligence of their designs:
came, they said to us ten times; that is, they came to them at Jerusalem, and often told them, as this phrase "ten times" signifies; see Gill on Gen 31:7,
from all places whence ye shall return unto us: they will be upon you, come which way you will, so that ye are in the utmost danger: or "from all places"; where you are repairing and rebuilding:
return to us; that ye may enjoy peace and prosperity with us under Sanballat, &c. and escape the wrath and fury you are now exposed to; or "from all places we come, that ye may return to us"; so De Dieu; these Jews, though they pretended to be friends, to their brethren, yet seemed to be in friendship with their enemies, and sought to discourage them, and weaken their minds, and cause them to cease building.