Jeremiah 31:34

And they shall teach no more every man his neighbor and every man his brother, saying, Know the Lord, such admonitory instruction in the knowledge of Jehovah being no longer required; for they shall all know Me, from the least of them unto the greatest of them, saith the Lord, the Spirit of God Himself having enlightened and instructed them, Isaiah 54:13; for I will forgive their iniquity, and I will remember their sin no more, the remission of sins through the merits of the Messiah being the central thought of all New Testament instruction. It is clear, of course, that this knowledge and experience of the grace of God does not exclude, but rather presupposes, the proclamation of God's gracious will in Christ Jesus.