Ezekiel 44:17

44:17 “‘When they enter the gates of the inner court, they must wear linen garments; they must not have any wool on them when they minister in the inner gates of the court and in the temple.

Ezekiel 44:11

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.