Jamieson, Fausset and Brown on Ezekiel 24:4

4. pieces thereof--those which properly belong to it, as its own.

every good piece ... choice bones--that is, the most distinguished of the people. The "choice bones" in the pot have flesh adhering to them. The bones under the pot (Eze 24:5) are those having no flesh and used as fuel, answering to the poorest who suffer first, and are put out of pain sooner than the rich who endure what answers to the slower process of boiling.