Jeremiah 21:7

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.

I will deliver Zedekiah ... and ... the people, and such - rather, explanatory, 'the people, namely, such as are left,' etc.

Into the hand of those that seek their life - content with nothing short of their death; not content with plundering and enslaving them.

He shall smite ... with the edge of the sword - this was the fate of Zedekiah's sons and many of the Jewish nobles. Zedekiah himself, though not put to a violent death, died of grief. (Compare as to the accurate fulfillment ; ; 2 Kings 25:6).