“Whatever thing I command you, that you shall observe to do. You shall not add to it, nor take away from it.”
Deuteronomy 12:32 (WEB)
Context Reading
30be careful that you are not ensnared to follow them after they are destroyed from before you, and that you not inquire after their gods, saying, “How do these nations serve their gods? I will do likewise.” 31You shall not do so to Yahweh your God; for every abomination to Yahweh, which he hates, they have done to their gods; for they even burn their sons and their daughters in the fire to their gods. 32Whatever thing I command you, that you shall observe to do. You shall not add to it, nor take away from it.