1 Timothy 3:6

Because nothing so alienates men from the lovingkindness of God, and gives them over to the fire of the pit, as the tyranny of pride. For when this is present with us, our whole life becomes impure, even though we fulfill temperance, chastity, fasting, prayer, almsgiving, anything.… Let us then restrain this swelling of the soul, let us cut up by the roots this lump of pride, if at least we would wish to be clean, and to escape the punishment appointed for the devil. For that the proud must fall under the same punishment as that (wicked) one, hear Paul declare; "Not a novice, lest being lifted up with pride, he fall into the judgment, and the snare of the devil." What is "the judgment"? He means, into the same "condemnation," the same punishment.

"Not a novice." He does not say, not a young man, but not a new convert. For he had said, "I have planted, Apollos watered, but God gave the increase." Wishing them to point out such an one, he used this word. For, otherwise, what hindered him from saying, "Not a young man"? For if youth only was an objection, why did he himself appoint Timothy, a young man? (and this he proves by saying to him, "Let no man despise thy youth.") Because he was aware of his great virtue, and his great strictness of life. Knowing which he writes, "From a child thou hast learned the holy Scriptures." And that he practiced intense fasting is proved by the words, "Use a little wine for thine often infirmities"; which he wrote to him amongst other things, as, if he had not known of such good works of his, he would not have written, nor given any such charge to his disciple. But as there were many then who came over from the Heathen, and were baptized, he says, "Do not immediately advance to a station of dignity a novice, that is, one of these new converts." For, if before he had well been a disciple, he should at once be made a Teacher, he would be lifted up into insolence. If before he had learnt to be under rule, he should be appointed one of the rulers, he would be puffed up: therefore he adds, "Lest being lifted up with pride, he fall into the condemnation of the devil," that is, into the same condemnation which Satan incurred by his pride.