Devarim 18:5-7

Orthodox Jewish Bible

⁵ For Hashem Eloheicha hath chosen him out of all thy tribes, to stand to minister in the Shem of Hashem, he and his banim kol hayamim.

⁶ And if a Levi come from any of thy she’arim (gates, i.e., towns) out of kol Yisroel, where he is living, and come with all the earnestness of his nefesh unto the place which Hashem shall choose;

⁷ Then he shall minister in the Shem of Hashem Elohav, as all his achim the Levi’im do, which stand there before Hashem.