Ezekiel 44:10-12
44:10 “‘But the Levites who went far from me, straying off from me after their idols when Israel went astray, will be responsible for their sin.
44:11 Yet they will be ministers in my sanctuary, having oversight at the gates of the temple, and serving the temple. They will slaughter the burnt offerings and the sacrifices for the people, and they will stand before them to minister to them.
44:12 Because they used to minister to them before their idols, and became a sinful obstacle to the house of Israel, consequently I have made a vow concerning them, declares the sovereign Lord, that they will be responsible for their sin.