Numbers 3:5-7

New Revised Standard Version, Anglicised Catholic Edition

The Duties of the Levites

⁵ Then the Lord spoke to Moses, saying: ⁶ Bring the tribe of Levi near, and set them before Aaron the priest, so that they may assist him. ⁷ They shall perform duties for him and for the whole congregation in front of the tent of meeting, doing service at the tabernacle;