Deuteronomy 4:2
King James Version
“Ye shall not add unto the word which I command you, neither shall ye diminish from it, that ye may keep the commandments of the LORD your God which I command you.”
Context
1Now therefore hearken, O Israel, unto the statutes and unto the judgments, which I teach you, for to do that ye may live, and go in and possess the land which the LORD God of your fathers giveth you.
2Ye shall not add unto the word which I command you, neither shall ye diminish from it, that ye may keep the commandments of the LORD your God which I command you.
3Your eyes have seen what the LORD did because of Baal-peor: for all the men that followed Baal-peor, the LORD thy God hath destroyed them from among you.
4But ye that did cleave unto the LORD your God alive every one of you this day.
5Behold, I have taught you statutes and judgments, even as the LORD my God commanded me, that ye should do so in the land whither ye go to possess it.