Ezekiel 44:10

And the Levites But the Levites which went away far from me … after their idols, they shall bear their iniquity, 11 and shall be ministers &c. The clause "they shall be ministers" explains how these Levites shall bear their iniquity they shall be degraded from the priestly office and reduced to the place of subordinate servants. To "bear iniquity" is to bear the penalty of it, ch. Ezekiel 4:4. On "idols," ch. Ezekiel 6:4.

which went astray Most naturally refers to Israel, cf. Ezekiel 44:15; though it might refer to the Levites, cf. Ezekiel 48:11.