Deuteronomy 4:2
You must not add to or subtract from what I command you, so that you may keep the commandments of the LORD your God that I am giving you.
Berean Standard Bible
Ye shall not add unto the word which I command you, neither shall ye diminish ought from it, that ye may keep the commandments of the LORD your God which I command you.
You shall not add to the word which I command you, neither shall you take away from it, that you may keep the commandments of the LORD your God which I command you.