Leviticus 20:4-5

4If the people of the land, however, 1should ever disregard that man when he gives any of his 2children to Molech, so as not to put him to death, 5then I Myself will set My face against that man and against his family, and I will cut off from among their people both him and all those who play the prostitute with him, by playing the prostitute with Molech.