(4) Behold, I will turn back . . .--Jeremiah's answer is far other than they looked for, and had even ventured to suggest. The judgment could no longer be averted. The hand of Jehovah was against them, and would bring the Chaldaeans that were now outside the walls nearer and nearer, till they came within them. In the structure of the sentence, however, "without the walls "belongs to "wherewith ye fight." The defenders of the city were to be driven back within its gates from the outer line of fortifications.

Verse 4. - I will assemble them into the midst of this city; i.e. I will compel the warriors to give up resistance, and shut themselves up within the walls.

21:1-10 When the siege had begun, Zedekiah sent to ask of Jeremiah respecting the event. In times of distress and danger, men often seek those to counsel and pray for them, whom, at other times, they despise and oppose; but they only seek deliverance from punishment. When professors continue in disobedience, presuming upon outward privileges, let them be told that the Lord will prosper his open enemies against them. As the king and his princes would not surrender, the people are exhorted to do so. No sinner on earth is left without a Refuge, who really desires one; but the way of life is humbling, it requires self-denial, and exposes to difficulties.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.