Titus 1:4

to Titus, my true child after a common faith: Grace and peace from God the Father and Christ Jesus our Saviour.

My true child ... This is usually understood as meaning that Paul had converted Titus, although, of course, no detail of this is given in the New Testament. Lipscomb also understood this as indicating Paul's conversion of Titus.[15]

After a common faith ... Hendriksen would make the "faith" here to be "used in the subjective sense";[16] but we believe that De Welt is correct in understanding it "as the objective quality of faith,"[17] that is, the Christian religion shared by the Christians of all ages.

[15] David Lipscomb, New Testament Commentaries, Titus (Nashville: Gospel Advocate Company, 1976), p. 263.

[16] William Hendriksen, op. cit., p. 343.

[17] Don DeWelt, Paul's Letters to Timothy and Titus (Joplin: College Press, 1961), p. 141.