Jeremiah 21:4

4 to tell Zedekiah that the Lord, the God of Israel, had said, "Zedekiah, I am going to defeat your army that is fighting against the king of Babylonia and his army. I will pile up your soldiers' weapons in the center of the city.

Jeremiah 21:4 Meaning and Commentary

Jeremiah 21:4

Thus saith the Lord God of Israel
Who had been, still was, and would be, Israel's God, even the God of such who are Israelites indeed; though he should, as he would, give up the present generation to ruin and destruction; they having by their sins forfeited his care and protection of them; and therefore it was in vain to hope for it from this character which they bore: behold, I will turn back the weapons of war that [are] in your hands;
so that they should do no hurt to the enemy, but recoil upon themselves. The meaning is, that they should be useless and unserviceable; that they should neither be defensive to them, nor offensive to their enemies; but rather hurtful to themselves. It seems to suggest, as if they should fall out with one another; and, like the Midianites, turn their swords upon one another, and destroy each other: wherewith ye fight against the king of Babylon, and [against] the
Chaldeans which besiege you without the walls;
by shooting arrows at them from within the city; or by sallying out unto them with sword in hand: this, shows that the Chaldean army, under the command of the king of Babylon, was now without the walls of Jerusalem besieging it: and I will assemble them into the midst of this city;
either the weapons of war, as Jarchi and others; which the Chaldeans, breaking into the city, should cause to be brought in to them in the middle of the city, and there slay them with them: or rather the Chaldeans, as Kimchi; who, though now without the walls, and which the Jews thought a sufficient security for them; yet should not be long there, but the walls would be broken down, and they should enter the city, and rendezvous their whole army in the midst of it.

Jeremiah 21:4 In-Context

2 "Please speak to the Lord for us, because King Nebuchadnezzar of Babylonia and his army are besieging the city. Maybe the Lord will perform one of his miracles for us and force Nebuchadnezzar to retreat."
3 Then the Lord spoke to me, and I told those who had been sent to me
4 to tell Zedekiah that the Lord, the God of Israel, had said, "Zedekiah, I am going to defeat your army that is fighting against the king of Babylonia and his army. I will pile up your soldiers' weapons in the center of the city.
5 I will fight against you with all my might, my anger, my wrath, and my fury.
6 I will kill everyone living in this city; people and animals alike will die of a terrible disease.
Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.