49 only you shall not number the tribe of Levi, neither take the sum of them among the children of Israel:
Numbers 1:49 Cross References - TKJU
Numbers 2:33
33 But the Levites were not numbered among the children of Israel; as the LORD commanded Moses.
Numbers 26:62
62 And those that were numbered of them were twenty and three thousand, all males from a month old and upward: For they were not numbered among the children of Israel, because there was no inheritance given them among the children of Israel.