Numbers 4:30
from thirty to fifty years old, counting everyone who comes to serve in the work of the Tent of Meeting.
Berean Standard Bible
From thirty years old and upward even unto fifty years old shalt thou number them, every one that entereth into the service, to do the work of the tabernacle of the congregation.
you shall count them from thirty years old and upward even to fifty years old—everyone who enters on the service, to do the work of the Tent of Meeting.