Leviticus 20:2-3

“Give the people of Israel these instructions, which apply both to native Israelites and to the foreigners living in Israel. “If any of them offer their children as a sacrifice to Molech, they must be put to death. The people of the community must stone them to death. I myself will turn against them and cut them off from the community, because they have defiled my sanctuary and brought shame on my holy name by offering their children to Molech.