Albert Barnes Commentary Ezekiel 24:6

"Wherefore thus saith the Lord Jehovah: Woe to the bloody city, to the caldron whose rust is therein, and whose rust is not gone out of it! take out of it piece after piece; No lot is fallen upon it." — Ezekiel 24:6 (ASV)

Scum – Better, rust .

Bring it out piece by piece – This refers to the city; bring out the inhabitants one by one, and clear the city of them, whether by death, exile, or captivity.

Let no lot fall upon it – In the captivity of Jehoiakim and in that of Jehoiachin, some were taken, others left. Now all shall be removed.