Leviticus 20:3-5

I will be against him and cut him off from his people, because he gave his children to Molech. He showed that he did not respect my holy name, and he made my Holy Place unclean. The people of the community might ignore that person and not kill the one who gave his children to Molech. But I will be against him and his family, and I will cut him off from his people. I will do this to anyone who follows him in being unfaithful to me by worshiping Molech.