Luke 3:23

And He--Jesus--when He began His ministry, was about thirty years old. He was the son (it was supposed)

2 Corinthians 10:3-4

For, though we are still living in the world, it is no worldly warfare that we are waging.

Ephesians 6:10-18

In conclusion, strengthen yourselves in the Lord and in the power which His supreme might imparts.

1 Timothy 1:18

This is the charge which I entrust to you, my son Timothy, in accordance with the inspired instructions concerning you which were given me long ago, that being equipped with them as your armour you may be continually fighting the good fight,

1 Timothy 3:1

Faithful is the saying, "If any one is eager to have the oversight of a Church, he desires a noble work."

1 Timothy 3:6

He ought not to be a new convert, for fear he should be blinded with pride and come under the same condemnation as the Devil.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Enter

2 Corinthians 10:3
For, though we are still living in the world, it is no worldly warfare that we are waging.
Ephesians 6:10
In conclusion, strengthen yourselves in the Lord and in the power which His supreme might imparts.
1 Timothy 1:18
This is the charge which I entrust to you, my son Timothy, in accordance with the inspired instructions concerning you which were given me long ago, that being equipped with them as your armour you may be continually fighting the good fight,

To do

1 Timothy 3:1
Faithful is the saying, "If any one is eager to have the oversight of a Church, he desires a noble work."