2 Kings 16:3

16:3 He followed in the footsteps of the kings of Israel. He passed his son through the fire, a horrible sin practiced by the nations whom the Lord drove out from before the Israelites.

2 Kings 21:6

21:6 He passed his son through the fire and practiced divination and omen reading. He set up a ritual pit to conjure up underworld spirits, and appointed magicians to supervise it. He did a great amount of evil in the sight of the Lord, provoking him to anger.