Leviticus 20:2-5

2Moreover, thou shalt say to the children of Israel, Whosoever he be of the children of Israel, or of the strangers that sojourn in Israel, that giveth of his seed unto Molech; he shall surely be put to death: the people of the land shall stone him with stones. 3I also will set my face against that man, and will cut him off from among his people; because he hath given of his seed unto Molech, to defile my sanctuary, and to profane my holy name. 4And if the people of the land do at all hide their eyes from that man, when he giveth of his seed unto Molech, and put him not to death; 5then I will set my face against that man, and against his family, and will cut him off, and all that play the harlot after him, to play the harlot with Molech, from among their people.