Deuteronomy 12:31-32

American Standard Version

³¹ Thou shalt not do so unto Jehovah thy God: for every abomination to Jehovah, which he hateth, have they done unto their gods; for even their sons and their daughters do they burn in the fire to their gods.

³² What thing soever I command you, that shall ye observe to do: thou shalt not add thereto, nor diminish from it.