Numbers Chapter 4, Verse 30

30: 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.- edit KJV text
30: From thirty years old and upward, unto fifty years old, all that go in to the office of their ministry, and to the service of the covenant of the testimony.— edit Douay text
30: Take the number of them from five and twenty years old and upwards until fifty years old, every one that goes in to perform the services of the tabernacle of witness.— edit LXX text