Bamidbar 18:2-4

Orthodox Jewish Bible

² And thy brethren also of the tribe of Levi, the Shevet Avicha, bring thou with thee, that they may be joined unto thee, and minister unto thee; while thou and thy Banim with thee are before the Ohel HaEdut.

³ And they shall stand your guard duty, and the duty of Kol HaOhel; only they shall not come near the Klei HaKodesh and the Mizbe’ach, that neither they, nor ye also, die.

⁴ And they shall be joined unto thee, and stand guard duty of the Ohel Mo’ed, for kol Avodat HaOhel; and a zar shall not encroach unto you.