Leviticus 20:2-5

²"Say to the people of Israel, Any man of the people of Israel, or of the strangers that sojourn in Israel, who gives any of his children to Molech shall be put to death; the people of the land shall stone him with stones. ³I myself will set my face against that man, and will cut him off from among his people, because he has given one of his children to Molech, defiling my sanctuary and profaning my holy name. ⁴And if the people of the land do at all hide their eyes from that man, when he gives one of his children to Molech, and do not put him to death, ⁵then I will set my face against that man and against his family, and will cut them off from among their people, him and all who follow him in playing the harlot after Molech.