The pieces thereof - Or, that belong to it; i. e., the pieces which are designed for the caldron, and belong to it as the inhabitants belong to the city. The choice pieces are the choice members of the community Ezekiel 11:3.
Matthew Henry
Concise Bible Commentary
The pot on the fire represented Jerusalem besieged by the Chaldeans: all orders and ranks were within the walls, prepared as a prey for the enemy. They ought to have put away their transgressions, as the scum, which rises by the heat of the fire, is taken from the top of the pot. But they grew worse, and their miseries increased. Jerusalem was to be levelled with the ground. The time appointed for the punishment of wicked men may seem to come slowly, but it will come surely. It is sad to think how many there are, on whom ordinances and providences are all lost.
SDA Bible Commentary (limited)
Volume 1-7
4. The pieces thereof. The Jews themselves. The choice pieces probably designate the upper classes, or the mention of the various pieces may not be for the purpose of designating any particular classes, but only to emphasize that all, even the best, would be involved in the ruin.
Burn.Heb.dur, “to stack in circles.”
Bones. A slight change yields the reading “logs” (cf.v.10), although bones before the fat is extracted may be used for fuel.