"Therefore behold, the days are coming," says the LORD, "when it will no more be called Tophet, or the Valley of the Son of Hinnom, but the Valley of Slaughter; for they will bury in Tophet until there is no room.
Jeremiah 7:32
Surrounding context
7:31 And they have built the high places of Tophet, which is in the Valley of the Son of Hinnom, to burn their sons and their daughters in the fire, which I did not command, nor did it come into My heart.
7:32 "Therefore behold, the days are coming," says the LORD, "when it will no more be called Tophet, or the Valley of the Son of Hinnom, but the Valley of Slaughter; for they will bury in Tophet until there is no room.
7:33 The corpses of this people will be food for the birds of the heaven and for the beasts of the earth. And no one will frighten them away.