Albert Barnes Commentary Jeremiah 25:34-36

"Wail, ye shepherds, and cry; and wallow [in ashes], ye principal of the flock; for the days of your slaughter and of your dispersions are fully come, and ye shall fall like a goodly vessel. And the shepherds shall have no way to flee, nor the principal of the flock to escape. A voice of the cry of the shepherds, and the wailing of the principal of the flock! for Jehovah layeth waste their pasture." — Jeremiah 25:34-36 (ASV)

Principal of the flock – that is, noble ones.

Wallow yourselves in the ashes – Rather, roll yourselves on the ground.

For ... – Read: “for your days for being slaughtered are accomplished, and I will scatter you” (or, dash you in pieces).

Fall like a pleasant vessel – The comparison suggests the idea of change from a thing of value into worthless fragments.

Hath spoiled (Jeremiah 25:36) – Or, spoils.