1 Timothy 4:12

"Let no man despise thy youth." Observe that it becomes a priest to command and to speak authoritatively, and not always to teach. But because, from a common prejudice, youth is apt to be despised, therefore he says, "Let no man despise thy youth." For a teacher ought not to be exposed to contempt. But if he is not to be despised, what room is there for meekness and moderation? Indeed the contempt that he fails into personally he ought to bear; for teaching is commended by longsuffering. But not so, where others are concerned; for this is not meekness, but coldness. If a man revenge insults, and ill language, and injuries offered to himself, you justly blame him. But where the salvation of others is concerned, command, and interpose with authority. This is not a case for moderation, but for authority, lest the public good suffer. He enjoins one or the other as the case may require. Let no one despise thee on account of thy youth. For as long as thy life is a counterpoise, thou wilt not be despised for thy youth, but even the more admired: therefore he proceeds to say, "But be thou an example of the believers in word, in conversation, in charity, in faith, in purity." In all things showing thyself an example of good works: that is, be thyself a pattern of a Christian life, as a model set before others, as a living law, as a rule and standard of good living, for such ought a teacher to be. "In word," that he may speak with facility, "in conversation, in charity, in faith, in" true "purity, in temperance."