Luke 3:23

And Jesus himself was, when he began, about thirty years of age, being, as was supposed, the son of Joseph, who was the son of Heli,

2 Corinthians 10:3-4

For though we walk in the flesh, we do not war according to the flesh,

Ephesians 6:10-18

Finally, be strong in the Lord, and in the power of his might.

1 Timothy 1:18

This charge I commit to thee, my child Timothy, in accordance with the directions of the prophets before given to thee, that thou mayst in them war the good warfare,

1 Timothy 3:1

True is the saying: If a man desire the office of a bishop, he desireth a good work.

1 Timothy 3:6

not a new convert, lest being puffed up with pride he fall into the condemnation of 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 walk in the flesh, we do not war according to the flesh,
Ephesians 6:10
Finally, be strong in the Lord, and in the power of his might.
1 Timothy 1:18
This charge I commit to thee, my child Timothy, in accordance with the directions of the prophets before given to thee, that thou mayst in them war the good warfare,

To do

1 Timothy 3:1
True is the saying: If a man desire the office of a bishop, he desireth a good work.