Behold, I will turn back the weapons, &c. Instead of doing execution upon your enemies, they shall hurt yourselves, and be the occasion of your own destruction. God will as visibly appear against you as if a miraculous wind were to drive back your own darts and arrows, and turn them upon yourselves. And I myself will fight against you By the executioners of my wrath, the sword, the famine, and the pestilence. I will plainly appear on your enemies' side, by the success I will give to their arms. And I will smite the inhabitants of this city I the Lord will do it, and it shall evidently appear to be my work; both man and beast Even the beasts shall perish, both those that are for food, and those that are for service in war. They shall die of a great pestilence Which shall rage within the walls, while their enemies are encamped about them. Though the walls and gates of Jerusalem may for a time keep out the Chaldeans, they cannot keep out God's judgments. His arrows of pestilence can reach those that think themselves safe from other arrows. And I will deliver Zedekiah, &c. The king himself, and all the people that escape the sword, famine, and pestilence, shall fall into the hands of Nebuchadnezzar and the Chaldeans. And he shall smite them with the edge of the sword Zedekiah himself was not put to death, but carried to Babylon, where he died: see Jeremiah 24:5. But his sons and his great men were slain by the command of Nebuchadnezzar, 2 Kings 25:7-8. “It is common in all writers to express that indefinitely which is true of the greater part of the persons concerned.” Lowth. He shall not spare, neither have pity nor mercy These three synonymous terms are used by way of emphasis, to express the severe revenge the Babylonians would take of them. The inhabitants of Jerusalem must indeed have been sensible at last, that they could expect little or no mercy, since they had rebelled three times against the king of Babylon.
Jeremiah 21:4-7
4 Thus saith the LORD God of Israel; Behold, I will turn back the weapons of war that are in your hands, wherewith ye fight against the king of Babylon, and against the Chaldeans, which besiege you without the walls, and I will assemble them into the midst of this city.
5 And I myself will fight against you with an outstretched hand and with a strong arm, even in anger, and in fury, and in great wrath.
6 And I will smite the inhabitants of this city, both man and beast: they shall die of a great pestilence.
7 And afterward, saith the LORD, I will deliver Zedekiah king of Judah, and his servants, and the people, and such as are left in this city from the pestilence, from the sword, and from the famine, into the hand of Nebuchadrezzar king of Babylon, and into the hand of their enemies, and into the hand of those that seek their life: and he shall smite them with the edge of the sword; he shall not spare them, neither have pity, nor have mercy.