Christians must do good without treating their goodness as the reason God saves them. Titus 3 roots humble obedience in God’s mercy. God saved people who were foolish, deceived, and enslaved by sin, not because they were righteous, but because He is merciful. He gives the Holy Spirit to wash and renew them, so grace does not release them from obedience but frees them for it. They can respect authorities, treat neighbours gently, and devote themselves to good deeds that make God’s grace visible.