Numbers 8:25

But after they are fifty years old, they are to give up their work and do no more;

Numbers 4:23

All those from thirty to fifty years old who are able to do the work of the Tent of meeting.

2 Timothy 4:7

I have made a good fight, I have come to the end of my journey, I have kept the faith:

Treasury of Scripture Knowledge

Summary

And from the age of fifty years they shall cease waiting upon the service thereof, and shall serve no more:

General references

Bible References

General references

Numbers 4:35
Numbering all those from thirty to fifty years old who were able to do the work in the Tent of meeting;

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain