To Titus, mine own son after the common faith,.... Not in a natural, but in a spiritual sense; the apostle being the instrument of his conversion, as he was of the conversion of Onesimus, and of many of the Corinthians, and therefore is said to beget them, Phm 1:10 and so was their spiritual father, and they his children: Titus was, in this sense, his "own son", or a true son, a legitimate one; a true convert; one really born again; a sincere believer, an Israelite indeed: and this he was "after the common faith"; either the doctrine of faith, which is but one, and is common to all the saints; or the grace of faith, which though different in degrees, yet is alike precious faith in all; the same for nature, kind, object, operation, and effects: and this phrase is used to show in what sense Titus was son to the apostle; as he was a believer, and no otherwise.
Grace, mercy, and peace, &c. which is the apostle's usual salutation; see 1Ti 1:2.