Leviticus 20:2-5

2Again, thou shalt say to the children of Israel, Whoever he be of the children of Israel, or of the strangers that sojourn in Israel, that giveth any of his seed to Molech; he shall surely be put to death: the people of the land shall stone him with stones.

3And I will set my face against that man, and will cut him off from among his people; because he hath given of his seed to Molech, to defile my sanctuary, and to profane my holy name.

4And if the people of the land do any ways hide their eyes from the man, when he giveth of his seed to Molech, and kill him not:

5Then I will set my face against that man, and against his family, and will cut him off, and all that go astray after him, to commit harlotry with Molech, from among their people.