In Context

27 Behold the days come, saith the Lord: and I will sow the house of Israel and the house of Juda with the seed of men, and with the seed of beasts.

28 And as I have watched over them, to pluck up, and to throw down, and to scatter, and destroy, and afflict: so will I watch over them, to build up, and to plant them, saith the Lord.

29 In those days they shall say no more: The fathers have eaten a sour grape, and the teeth of the children are set on edge.

30 But every one shall die for his own iniquity: every man that shall eat the sour grape, his teeth shall be set on edge.

31 Behold the days shall come, saith the Lord, and I will make a new covenant with the house of Israel, and with the house of Juda:

32 Not according to the covenant which I made with their fathers, in the day that I took them by the hand to bring them out of the land of Egypt: the covenant which they made void, and I had dominion over them, saith the Lord.

Jeremiah 31:30 in Other Translations