Leviticus 20:4-5

20:4 If, however, the people of the land shut their eyes to that man when he gives some of his children to Molech so that they do not put him to death, 20:5 I myself will set my face against that man and his clan. I will cut off from the midst of their people both him and all who follow after him in spiritual prostitution, to commit prostitution by worshiping Molech.