Jeremiah 31:29

“In those days they shall say no more, etc.] The following proverb or byword; they should have no occasion to use it, nor should they choose to use it; since they would understand themselves, and the dispensations of Providence towards them, better than to use it: the fathers have eaten a sour grape, and the children’s teeth are set on edge; that is, the fathers have sinned, and the children are punished for their sins. So the Targum, “the fathers have sinned, and the children are smitten.” This was in some sense true; they were punished for their fathers’ sins in the captivity, particularly for Manasseh’s; nor was it unusual with God to visit the iniquities of the fathers upon the children;…”

“In those days--after their punishment has. been completed, and mercy again visits them. fathers . . . eaten . . . sour grape . . . children's teeth . . . on edge--the proverb among the exiles' children born in Babylon, to express that they suffered the evil consequences of their fathers' sins rather than of their own (Lam 5:7; Eze 18:2-3).”

“The prophet shows that the happiness of Israel and Judah, united in one prosperous nation, will rest upon the consciousness that their chastisement has been the result of sins which they have themselves committed, and that God’s covenant depends not upon external sanctions, but upon a renewed heart. Jeremiah 31:27 So rapid shall be the increase that it shall seem as if children and young cattle sprang up out of the ground. Jeremiah 31:29, Jeremiah 31:30 A sour grape - Better, sour grapes. The idea that Jeremiah and Ezekiel (marginal reference) modified the terms of the second Commandment arises from a mistaken exegesis of their words. Compare Jeremiah 32:18; Deuteronomy 24:16. The obdurate…”

“31:29-30 Some seemed to think that this proverb (apparently a misinterpretation of Exod 20:5; 34:7; Num 14:18) meant that innocent children were dying because of their parents’ sins. The Lord made it clear that each individual is punished for his or her own sins (see Lam 5:7; Ezek 18:2-32; 33:10-20).”

“Jer 31:30; Lam 5:7; Eze 18:2, Eze 18:3 Jeremiah 31:30”

“The proverb, which Ezekiel also ( Eze 18:2.) mentions and contends against, cannot mean, "The fathers have begun to eat sour grapes, but not till the teeth of their sons have become blunted by them" (Ngelsbach); the change of tense is against this, for, by the perfect אכלוּ and the imperfect תּקהינה, the blunting of the children's teeth is set down as a result of the fathers' eating. The proverb means, "Children atone for the misdeeds of their fathers," or "The sins of the fathers are visited on their innocent children." On this point, cf. the explanations given in Eze 18:2. "Then shall they no more say" is rightly explained by Hitzig to mean, "They shall have no more occasion to say." But…”