Numbers 8:25

but at the age of fifty years, they shall retire from the service of the [tabernacle] work and serve no longer.

Numbers 4:23

From thirty years and upward to fifty years old, you shall number them; all who enter for service to do the work in the Tent of Meeting.

2 Timothy 4:7

I have fought the good and worthy and noble fight, I have finished the race, I have kept the faith [firmly guarding the gospel against error].

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
from thirty years and upward even to fifty years old, everyone who enters the service to do the work in the Tent of Meeting (tabernacle);