6. Tophet. This place connected, as this verse shows, with the “valley of the son of Hinnom” (see 2), where in the days of Isaiah and Jeremiah children were made to “pass through the fire to Molech” as sacrifices (2 Kings 23:10; see on Jer. 7:31).
The valley of slaughter. In righteous retribution for Judah’s cruel, idolatrous worship this infamous place would be turned into a place of “slaughter” when Jerusalem was taken by the Babylonians (see 2 Kings 25:1-9).