Deuteronomy 12:31-32

31You must not worship the LORD your God in their way, because in worshiping their gods, they do all kinds of detestable things the LORD hates. They even burn their sons and daughters in the fire as sacrifices to their gods. 32See that you do all I command you; do not add to it or take away from it. In Hebrew texts this verse (12:32) is numbered 13:1.