Tophet had been a remarkable place on several occasions. It was called Tophet because it had been a place of slaughter. And it had been a charnel house, or sepulchre for burying in; and also a place of sacrifice. See Joshua 15:8; 2 Kings 23:10; Isaiah 30:33; Psalms 78:60. The close of the Chapter is very affecting. There can be no cause for spiritual joy where the voice of the Bridegroom is not heard in his Church. His absence makes a gloom, let the surrounding circumstances otherwise be what they may.
Jeremiah 7:31-34
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 commanded them not, neither camee it into my heart.
32 Therefore, behold, the days come, saith the LORD, that it shall no more be called Tophet, nor the valley of the son of Hinnom, but the valley of slaughter: for they shall bury in Tophet, till there be no place.
33 And the carcases of this people shall be meat for the fowls of the heaven, and for the beasts of the earth; and none shall fray them away.
34 Then will I cause to cease from the cities of Judah, and from the streets of Jerusalem, the voice of mirth, and the voice of gladness, the voice of the bridegroom, and the voice of the bride: for the land shall be desolate.