from thirty years old and upward even until fifty years old, all that enter upon the service, to do work in the tent of meeting.
King James Version (KJV) - Numbers 4:3 >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.
Berean Study Bible (BSB) - Numbers 4:3 >men from thirty to fifty years old—everyone who is qualified to serve in the work at the Tent of Meeting.