Isaiah 30:33

“For Tophet is ordained of old, &c.] The place long ago appointed for the ruin of the Assyrian army, which pitched here: this was a valley near Jerusalem, the valley of the son of Hinnom; so called, from the drums and tabrets beat upon here, to prevent parents hearing the cries of their infants offered to Molech: into it was brought the filth and dung of the city; here malefactors were buried, it is said; and such as were condemned to burning were burned here; and such as had no burial were cast here; so that it was an image and picture of hell itself: and the word “Gehenna”, used for hell, comes from “Gehinnom”, or the valley of Hinnom, the name of this place; and some think that is here…”

“Tophet--literally, "A place of abomination"; the valley of the sons of Hinnom, southeast of Jerusalem, where Israel offered human sacrifices to Moloch by fire; hence a place of burning (Kg2 23:10; Jer 7:31). Latterly Gehinnom or Gehenna, that is, valley of Hinnom, was the receptacle of the refuse of the city, to consume which fires were constantly burning. Hence it came to express hell, the place of torment. In the former sense it was a fit place to symbolize the funeral pyre of the Assyrian army (not that it actually perished there); the Hebrews did not burn, but buried their dead, but the heathen Assyrians are to be burnt as a mark of ignominy. In the latter sense Tophet is the receptacle…”

“Tophet - This was a place near Jerusalem, in which the idolatrous Israelites used to offer up their children to Moloch. It may be put, for any place of torment; and particularly it is put for hell. For the king - For the king of Assyria. Fire - He alludes to the ancient custom, of burning sacrifices, and particularly of burning children to Moloch. The breath - The immediate hand of God, or his word of anger. Brimstone - He seems to allude to that shower of fire and brimstone, Gen 19:24. Next: Isaiah Chapter 31”

“30:33 Topheth was a pagan altar in the valley of Ben-Hinnom outside Jerusalem where child sacrifices were offered to the Ammonite god Molech by burning (2 Kgs 23:9-10).”

“Tophet: Kg2 23:10; Jer 7:31, Jer 7:32, Jer 19:6, Jer 19:11-14; Mat 4:22, Mat 18:8, Mat 18:9 ordained: Mat 25:41; Pe1 1:8; Jde 1:4 of old: Heb. from yesterday, Heb 13:8 for the king: Isa 14:9-20, Isa 37:38; Eze 32:22, Eze 32:23; Rev 19:18-20 the breath: Isa 30:27, Isa 30:28; Gen 19:24; Psa 40:5, Psa 40:6; Rev 14:10, Rev 14:11 Isaiah 30:1”