Numbers 8:24

This is that which concerneth the Levites: from twenty-five years old and upward shall he come to labour in the work of the service of the tent of meeting.

Numbers 4:3

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

1 Chronicles 23:3

And the Levites were numbered from thirty years old and upward; and their number, by their polls, man by man, was thirty-eight thousand.

Numbers 4:23

From thirty years old and upward to fifty years old shalt thou number them; every one that cometh to labour in the work, to perform the service in the tent of meeting.

1 Chronicles 23:24-27

These were the sons of Levi according to their fathers' houses, the chief fathers, as they were reckoned, by number of names by their polls, who did the work of the service of the house of Jehovah, from twenty years old and upward.

1 Chronicles 28:12-13

and the pattern of all that he had by the Spirit, of the courts of the house of Jehovah, and of all the chambers round about, for the treasuries of the house of God, and for the treasuries of the dedicated things;

1 Corinthians 9:7

Who ever carries on war at his own charges? who plants a vineyard and does not eat of its fruit? or who herds a flock and does not eat of the milk of the flock?

2 Corinthians 10:4

For the arms of our warfare are not fleshly, but powerful according to God to the overthrow of strongholds;

1 Timothy 1:18

This charge, my child Timotheus, I commit to thee, according to the prophecies as to thee preceding, in order that thou mightest war by them the good warfare,

1 Timothy 6:12

Strive earnestly in the good conflict of faith. Lay hold of eternal life, to which thou hast been called, and hast confessed the good confession before many witnesses.

2 Timothy 2:3-5

Take thy share in suffering as a good soldier of Jesus Christ.

Treasury of Scripture Knowledge

Summary

This is it that belongeth unto the Levites: from twenty and five years old and upward they shall go in to wait upon the service of the tabernacle of the congregation:

General references

Bible References

From twenty

Numbers 4:3
from thirty years old and upward even unto fifty years old, all that enter into 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' houses, the chief fathers, as they were reckoned, by number of names by their polls, who did the work of the service of the house of Jehovah, from twenty years old and upward.
1 Chronicles 23:3
And the Levites were numbered from thirty years old and upward; and their number, by their polls, man by man, was thirty-eight thousand.
1 Chronicles 28:12
and the pattern of all that he had by the Spirit, of the courts of the house of Jehovah, and of all the chambers round about, for the treasuries of the house of God, and for the treasuries of the dedicated things;

Wait upon

1 Corinthians 9:7
Who ever carries on war at his own charges? who plants a vineyard and does not eat of its fruit? or who herds a flock and does not eat of the milk of the flock?
2 Corinthians 10:4
For the arms of our warfare are not fleshly, but powerful according to God to the overthrow of strongholds;
1 Timothy 1:18
This charge, my child Timotheus, I commit to thee, according to the prophecies as to thee preceding, in order that thou mightest war by them the good warfare,
1 Timothy 6:12
Strive earnestly in the good conflict of faith. Lay hold of eternal life, to which thou hast been called, and hast confessed the good confession before many witnesses.
2 Timothy 2:3
Take thy share in suffering as a good soldier of Jesus Christ.

General references

Numbers 4:35
from thirty years old and upward even to fifty years old, every one that entered into the labour, for service in the tent of meeting.