2:9,10 Servants must know and do their duty to their earthly masters, with a reference to their heavenly one. In serving an earthly master according to Christ's will, He is served; such shall be rewarded by him. Not giving disrespectful or provoking language; but to take a check or reproof with silence, not making confident or bold replies. When conscious of a fault, to excuse or justify it, doubles it. Never putting to their own use that which is their master's, nor wasting the goods they are trusted with. Showing all good fidelity to improve a master's goods, and promote his thriving. If ye have not been faithful in that which is another man's, who shall give you that which is your own? Lu 16:12. True religion is an honour to the professors of it; and they should adorn it in all things.
10. Not purloining—Greek, "Not appropriating" what does not belong to one. It means "keeping back" dishonestly or deceitfully (Ac 5:2, 3).
showing—manifesting in acts.
good—really good; not so in mere appearance (Eph 6:5, 6; Col 3:22-24). "The heathen do not judge of the Christian's doctrines from the doctrine, but from his actions and life" [Chrysostom]. Men will write, fight, and even die for their religion; but how few live for it! Translate, "That they may adorn the doctrine of our Saviour God," that is, God the Father, the originating author of salvation (compare Note, see on 1Ti 1:1). God deigns to have His Gospel-doctrine adorned even by slaves, who are regarded by the world as no better than beasts of burden. "Though the service be rendered to an earthly master, the honor redounds to God, as the servant's goodwill flows from the fear of God" [Theophylact]. Even slaves, low as is their status, should not think the influence of their example a matter of no consequence to religion: how much more those in a high position. His love in being "our Saviour" is the strongest ground for our adorning His doctrine by our lives. This is the force of "For" in Tit 2:11.