Leviticus 18:21

And thou shalt not let any of thy seed pass through the fire to Molech, an ancient Canaanitish idol in the form of a hollow statue with the head of an ox, in whose worship such bestial practices of sacrificing children, in an excess of cruelty, were common; neither shalt thou profane the name of thy God, as would certainly happen through participation in such abominations. I am the Lord.