Jeremiah 7:31-32

7:31 They have also built places of worship in a place called Topheth in the Valley of Ben Hinnom so that they can sacrifice their sons and daughters by fire. That is something I never commanded them to do! Indeed, it never even entered my mind to command such a thing! 7:32 So, watch out!” says the Lord. “The time will soon come when people will no longer call those places Topheth or the Valley of Ben Hinnom. But they will call that valley the Valley of Slaughter and they will bury so many people in Topheth they will run out of room.

Jeremiah 32:35

32:35 They built places of worship for the god Baal in the Valley of Ben Hinnom so that they could sacrifice their sons and daughters to the god Molech. Such a disgusting practice was not something I commanded them to do! It never even entered my mind to command them to do such a thing! So Judah is certainly liable for punishment.’

Leviticus 18:21

18:21 You must not give any of your children as an offering to Molech, so that you do not profane the name of your God. I am the Lord!