Jamieson, Fausset and Brown on Titus 2:10

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.

all--all possible.

good--really good; not so in mere appearance (Ep 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.