Holding fast the faithful word as he has been taught, that he may be able by sound doctrine both to exhort and to refute the opposition.
All Commentaries on Titus 1:9 Go To Titus 1
Augustine of Hippo
AD 430
If anyone says, however, that if teachers are made learned by the Holy Spirit then they do not need to be taught by educators what they should say or how they should say it, he should also say that we should not pray because the Lord says, “for your Father knows what is needful for you, before you ask him.” With such a false premise one might argue that the apostle Paul should not have taught Timothy and Titus what or how they should teach others. One upon whom is imposed the personage of a teacher in the church should have these three apostolic epistles before his eyes. Do we not read in the first epistle to Timothy … and in the second epistle is it not said … again, does he not say to Titus that a bishop should persevere in “that faithful word which is according to doctrine, that he may be able to exhort in sound doctrine and to convince the gainsayers”? On Christian Doctrine.