Jeremiah 19:2

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.

Jeremiah 19:6

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!