EZK 44:15

15 But the Kohanim the Levi'im, the Bnei Tzadok, that were shomer over the Mishmeret of My Mikdash when the Bnei Yisroel went astray from Me, they shall come near to Me to minister unto Me, and they shall stand before Me to offer unto Me the chelev and the dahm, saith Adonoi Hashem;