Numbers 1:48 WEB

⁴⁶  even all those who were numbered were six hundred three thousand five hundred fifty.

⁴⁷  But the Levites after the tribe of their fathers were not numbered among them.

⁴⁸  For Yahweh spoke to Moses, saying,

⁴⁹  'Only the tribe of Levi you shall not number, neither shall you take a census of them among the children of Israel;

⁵⁰  but appoint the Levites over the Tabernacle of the Testimony, and over all its furnishings, and over all that belongs to it. They shall carry the tabernacle, and all its furnishings; and they shall take care of it, and shall encamp around it.