7. In--with respect to all things.
      thyself a pattern--though but a young man thyself. All teaching is useless unless the teacher's example confirm his word.
      in doctrine--in thy ministerial teaching (showing) uncorruptness, that is, untainted purity of motive on thy part (compare 2Co 11:3), so as to be "a pattern" to all. As "gravity," &c., refers to Titus himself, so "uncorruptness"; though, doubtless, uncorruptness of the doctrine will be sure to follow as a consequence of the Christian minister being of simple, uncorrupt integrity himself.
      gravity--dignified seriousness in setting forth the truth.
      sincerity--omitted in the oldest manuscripts.

JFB.