Deuteronomy 4:1-2

‘And now, Israel, hearken unto the statutes, and unto the judgments which I am teaching you to do, so that ye live, and have gone in, and possessed the land which JEHOVAH God of your fathers is giving to you. Ye do not add to the word which I am commanding you, nor diminish from it, to keep the commands of JEHOVAH your God which I am commanding you.