John Calvin Commentary Jeremiah 7:34

"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 become a waste." — Jeremiah 7:34 (ASV)

He still continues the same subject; for he pronounces upon the Jews the punishment which they had deserved. He more fully expresses what he mentioned in the last verse regarding the shameful and dreadful barbarity that would follow the slaughter; for the whole country would not only be harassed by the enemy, but wholly laid waste: for when sounds of joy and gladness cease, all places are filled with lamentations; and when no marriages are celebrated, it is a sign of devastation.

But by 'marriage,' the Prophet, speaking of a part for the whole, means whatever was necessary for the preservation of society; it is as though he had said, “There will now be no marrying:” for without marriages the human race cannot continue. Thus, this cessation would be as though he had said that they would be wholly regardless of all those things necessary to perpetuate mankind. He thus adds nothing new, but expands on what we have previously observed—that the whole land would be filled with dead bodies, and that there would be such lamentation as to deter people from all their usual and ordinary habits: he afterwards shows more fully the same thing.