Numbers 4:35

from thirty years and upward even to fifty years old, everyone who entered the service for work in the tent of meeting.

Numbers 4:23

from thirty years and upward to fifty years old, you shall number them; all who enter to perform the service to do the work in the tent of meeting.

1 Chronicles 23:24

These were the sons of Levi according to their fathers’ households, even the heads of the fathers’ households of those of them who were counted, in the number of names by their census, doing the work for the service of the house of the Lord, from twenty years old and upward.

Numbers 4:3

from thirty years and upward, even to fifty years old, all who enter the service to do the work in the tent of meeting.

Numbers 4:30

from thirty years and upward even to fifty years old, you shall number them, everyone who enters the service to do the work of the tent of meeting.

Numbers 4:39

from thirty years and upward even to fifty years old, everyone who entered the service for work in the tent of meeting.

Numbers 4:43

from thirty years and upward even to fifty years old, everyone who entered the service for work in the tent of meeting.

Numbers 4:47

from thirty years and upward even to fifty years old, everyone who could enter to do the work of service and the work of carrying in the tent of meeting.

Numbers 8:24-26

“This is what applies to the Levites: from twenty-five years old and upward they shall enter to perform service in the work of the tent of meeting.

1 Chronicles 23:3

The Levites were numbered from thirty years old and upward, and their number by census of men was 38,000.

1 Chronicles 23:26-27

Also, the Levites will no longer need to carry the tabernacle and all its utensils for its service.”

1 Chronicles 28:13

also for the divisions of the priests and the Levites and for all the work of the service of the house of the Lord and for all the utensils of service in the house of the Lord;

Luke 3:23

When He began His ministry, Jesus Himself was about thirty years of age, being, as was supposed, the son of Joseph, the son of Eli,

1 Timothy 3:6

and not a new convert, so that he will not become conceited and fall into the condemnation incurred by the devil.

Treasury of Scripture Knowledge

Summary

From thirty years old and upward even unto fifty years old, every one that entereth into the service, for the work in the tabernacle of the congregation:

Bible References

General references

Numbers 4:3
from thirty years and upward, even to fifty years old, all who enter the service to do the work in the tent of meeting.
Numbers 8:24
“This is what applies to the Levites: from twenty-five years old and upward they shall enter to perform service in the work of the tent of meeting.
1 Chronicles 23:3
The Levites were numbered from thirty years old and upward, and their number by census of men was 38,000.
1 Chronicles 28:13
also for the divisions of the priests and the Levites and for all the work of the service of the house of the Lord and for all the utensils of service in the house of the Lord;
Luke 3:23
When He began His ministry, Jesus Himself was about thirty years of age, being, as was supposed, the son of Joseph, the son of Eli,
1 Timothy 3:6
and not a new convert, so that he will not become conceited and fall into the condemnation incurred by the devil.