Albert Barnes Commentary Ezekiel 43:19

"Thou shalt give to the priests the Levites that are of the seed of Zadok, who are near unto me, to minister unto me, saith the Lord Jehovah, a young bullock for a sin-offering." — Ezekiel 43:19 (ASV)

The seed of Zadok - See Ezekiel 40:46 note.