Numbers 4:3

And Jesus was then about thirty years of age, being (as was supposed) the son of Joseph, the son of Heli,

For though we are in the flesh, we do not carry on our war according to the flesh:

Moreover, my brethren, strengthen yourselves in the Lord, and in his mighty power.

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

It is certain, if any one is desirous of the episcopal office, he desireth a good work.

not one newly converted, least being puffed up he fall into the condemnation of the devil.

Treasury of Scripture Knowledge

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.

For though we are in the flesh, we do not carry on our war according to the flesh:

Moreover, my brethren, strengthen yourselves in the Lord, and in his mighty power.

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

It is certain, if any one is desirous of the episcopal office, he desireth a good work.