Numbers 1:47 WEB

⁴⁵  So all those who were numbered of the children of Israel by their fathers' houses, from twenty years old and upward, all who were able to go out to war in Israel;

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;