Jeremiah 31:29

The Lord Will Make a New Covenant with Israel and Judah

31:29 “When that time comes, people will no longer say, ‘The parents have eaten sour grapes, but the children’s teeth have grown numb.’ ¹ 

[31:29]  ¹ tn This word only occurs here and in the parallel passage in Ezek 18:2 in the Qal stem and in Eccl 10:10 in the Piel stem. In the latter passage it refers to the bluntness of an ax that has not been sharpened. Here the idea is of the “bluntness” of the teeth, not from having ground them down due to the bitter taste of sour grapes but to the fact that they have lost their “edge,” “bite,” or “sharpness” because they are numb from the sour taste. For this meaning for the word see W. L. Holladay, Jeremiah (Hermeneia), 2:197.