Berean Study Bible (BSB) - Numbers 4:23 >

from thirty to fifty years old, counting everyone who comes to serve in the work at the Tent of Meeting.

Jewish Publication Society of America Version (JPS1917) - Numbers 4:23 >

from thirty years old and upward until fifty years old shalt thou number them: all that enter in to wait upon the service, to do service in the tent of meeting.