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.
BSB
from thirty to fifty years old, counting everyone who comes to serve in the work of the Tent of Meeting.
WEB
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.
YLT
from a son of thirty years and upward even unto a son of fifty years thou dost number them, every one who is going in to the host, to do the service of the tent of meeting.