Deuteronomy 4:2; Deuteronomy 12:32; Acts 20:27

yYou shall not add to the word that I command you, nor take from it, that you may keep the commandments of the Lord your God that I command you.

32 Everything that I command you, you shall be careful to do. pYou shall not add to it or take from it.

27 for jI did not shrink from declaring to you kthe whole counsel of God.