NET
3 from thirty years old and upward to fifty years old, all who enter the company to do the work in the tent of meeting.
Darby
3 from thirty years old and upward even unto fifty years old, all that enter into the service, to do the work in the tent of meeting.
KJV
3 From thirty years old and upward even until fifty years old, all that enter into the host, to do the work in the tabernacle of the congregation.