Deuteronomy 12:31-32

Young's Literal Translation

³¹ `Thou dost not do so to Jehovah thy God; for every abomination of Jehovah which He is hating they have done to their gods, for even their sons and their daughters they burn with fire to their gods.

³² The whole thing which I am commanding you -- it ye observe to do; thou dost not add unto it, nor diminish from it.