Therefore, behold, the days come And are at no great distance; that this place shall no more be called Tophet, &c. In Joshua's time it was called The valley of the son of Hinnom; in after ages, it had the name of Tophet, from the noise of drums and tabrets sounding there while children were burning. Here it is foretold that it should have a new name and be called, The valley of Slaughter. See note on Jeremiah 7:32-33. I will make void the counsel, &c., in this place They shed innocent blood in this place, and in this place God would discomfit them, and cause their blood to be shed by the hands of the Chaldeans. And I will cause them to eat the flesh of their sons and daughters A terrible judgment threatened by Moses, Deuteronomy 28:53; and actually fulfilled in the siege of Jerusalem. See Lamentations 4:10.
Jeremiah 19:6-9
6 Therefore, behold, the days come, saith the LORD, that this place shall no more be called Tophet, nor The valley of the son of Hinnom, but The valley of slaughter.
7 And I will make void the counsel of Judah and Jerusalem in this place; and I will cause them to fall by the sword before their enemies, and by the hands of them that seek their lives: and their carcases will I give to be meat for the fowls of the heaven, and for the beasts of the earth.
8 And I will make this city desolate, and an hissing; every one that passeth thereby shall be astonished and hiss because of all the plagues thereof.
9 And I will cause them to eat the flesh of their sons and the flesh of their daughters, and they shall eat every one the flesh of his friend in the siege and straitness, wherewith their enemies, and they that seek their lives, shall straiten them.