Deuteronomy 4:1-2

Darby Translation

4 And now, Israel, hearken to the statutes and to the ordinances which I teach you, to do [them], that ye may live, and go in and possess the land which Jehovah the God of your fathers giveth you.

² Ye shall not add to the word which I command you, neither shall ye take from it, that ye may keep the commandments of Jehovah your God which I command you.