Yirmeyah 31:33-34

But this shall be the Brit that I will cut with Bais Yisroel; After those days, saith HASHEM, I will set My Torah in them inwardly, and I will write ketuvim on their hearts; and I will be their Elohim, and they shall be My People. And they shall teach no more every ish his re'a (neighbor), and every ish his brother, saying, Know HASHEM; for they shall all have da'as of Me, from the katon of them unto the gadol of them, saith HASHEM; for I will forgive their avon, and I will remember their chattat no more.