Titus was given a bunch of lessons that he should teach other people: old men, old women, young men, slaves. For a moment think about what Titus might have thought, “How do I teach this lesson when I myself am not able to set the perfect example?”.
………For the grace of God that brings salvation has appeared to all men. It teaches us to say “No” to ungodliness and worldly passions, and to live self-controlled, upright and godly lives in this present age, while we wait for the the blessed hope-the glorious appearing of our great God and Saviour, Jesus Christ, who gave himself for us to redeem us from all wickedness and to purify for himself a people that are his very own, eager to do what is good.
The grace of God that brought salvation is available to all people, including Titus and you and me.
That same grace apart from saving us teaches us to live godly, self-controlled, upright lives in this present age( 21st century). Sin has no hold on us because Christ gave himself to redeem us from all wickedness and to take us further than that, but to purify us for himself.