49 “You must not count the tribe of Levi or include them in the census of the other Israelites.

Read Numbers 1:49 Using Other Translations

Only thou shalt not number the tribe of Levi, neither take the sum of them among the children of Israel:
"Only the tribe of Levi you shall not list, and you shall not take a census of them among the people of Israel.
“Do not include the tribe of Levi in the registration; do not count them with the rest of the Israelites.