Jeremiah 7:31

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!

Jeremiah 19:2-6

19:2 Go out to the part of the Hinnom Valley which is near the entrance of the Potsherd Gate. Announce there what I tell you. 19:3 Say, ‘Listen to what the Lord says, you kings of Judah and citizens of Jerusalem! The Lord God of Israel who rules over all says, “I will bring a disaster on this place that will make the ears of everyone who hears about it ring! 19:4 I will do so because these people have rejected me and have defiled this place. They have offered sacrifices in it to other gods which neither they nor their ancestors nor the kings of Judah knew anything about. They have filled it with the blood of innocent children. 19:5 They have built places here for worship of the god Baal so that they could sacrifice their children as burnt offerings to him in the fire. Such sacrifices are something I never commanded them to make! They are something I never told them to do! Indeed, such a thing never even entered my mind! 19:6 So I, the Lord, say: “The time will soon come that people will no longer call this place Topheth or the Hinnom Valley. But they will call this valley the Valley of Slaughter!