What does Numbers 4:39 mean?

from thirty years old and upward even unto fifty years old, every one that entered upon the service, for work in the tent of meeting,

From thirty years old and upward even unto fifty years old, every one that entereth into the service, for the work in the tabernacle of the congregation,

from thirty years old and upward even unto fifty years old, every one that entered upon the service, for work in the tent of meeting,

All those from thirty to fifty years old who were able to do the work in the Tent of meeting,

from a son of thirty years and upward even unto a son of fifty years, every one who is going in to the host, for service in the tent of meeting,

From thirty years old and upward, unto fifty years old, all that go in to minister in the tabernacle of the covenant:

from thirty years old and upward even to fifty years old, every one that entered into the labour, for service in the tent of meeting,