Numbers 8:24

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:

Numbers 4:3

From thirty years old and upward even until fifty years old, all that enter into the host, to do the work in the tabernacle of the congregation.

1 Chronicles 23:3

Now the Levites were numbered from the age of thirty years and upward: and their number by their polls, man by man, was thirty and eight thousand.

Numbers 4:23

From thirty years old and upward until fifty years old shalt thou number them; all that enter in to perform the service, to do the work in the tabernacle of the congregation.

1 Chronicles 23:24-27

These were the sons of Levi after the house of their fathers; even the chief of the fathers, as they were counted by number of names by their polls, that did the work for the service of the house of the LORD, from the age of twenty years 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 the LORD, and of all the chambers round about, of the treasuries of the house of God, and of the treasuries of the dedicated things:

1 Corinthians 9:7

Who goeth a warfare any time at his own charges? who planteth a vineyard, and eateth not of the fruit thereof? or who feedeth a flock, and eateth not of the milk of the flock?

2 Corinthians 10:4

(For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;)

1 Timothy 1:18

This charge I commit unto thee, son Timothy, according to the prophecies which went before on thee, that thou by them mightest war a good warfare;

1 Timothy 6:12

Fight the good fight of faith, lay hold on eternal life, whereunto thou art also called, and hast professed a good profession before many witnesses.

2 Timothy 2:3-5

Thou therefore endure hardness, 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 until fifty years old, all that enter into the host, to do the work in the tabernacle of the congregation.
1 Chronicles 23:24
These were the sons of Levi after the house of their fathers; even the chief of the fathers, as they were counted by number of names by their polls, that did the work for the service of the house of the LORD, from the age of twenty years and upward.
1 Chronicles 23:3
Now the Levites were numbered from the age of thirty years and upward: and their number by their polls, man by man, was thirty and eight thousand.
1 Chronicles 28:12
And the pattern of all that he had by the spirit, of the courts of the house of the LORD, and of all the chambers round about, of the treasuries of the house of God, and of the treasuries of the dedicated things:

Wait upon

1 Corinthians 9:7
Who goeth a warfare any time at his own charges? who planteth a vineyard, and eateth not of the fruit thereof? or who feedeth a flock, and eateth not of the milk of the flock?
2 Corinthians 10:4
(For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;)
1 Timothy 1:18
This charge I commit unto thee, son Timothy, according to the prophecies which went before on thee, that thou by them mightest war a good warfare;
1 Timothy 6:12
Fight the good fight of faith, lay hold on eternal life, whereunto thou art also called, and hast professed a good profession before many witnesses.
2 Timothy 2:3
Thou therefore endure hardness, as a good soldier of Jesus Christ.

General references

Numbers 4:35
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:

King James Version Public Domain