Numbers 3:6

"Bring the tribe of Levi near, and present them before Aaron the priest, that they may serve him.

Surrounding context

3:5 And the LORD spoke to Moses, saying:

3:6 "Bring the tribe of Levi near, and present them before Aaron the priest, that they may serve him.

3:7 And they shall attend to his needs and the needs of the whole congregation before the tabernacle of meeting, to do the work of the tabernacle.