Who are kept by the power of God through faith unto salvation ready to be revealed in the last time.
Ver. 5. Who are kept] φρουρουμενοι, as with a guard, or as in a garrison, that is, well fenced with walls and works, and so is made impregnable.
By the power of God] Much seen in the saints' perseverance. "My Father is stronger than all; none therefore can take you out of my hands, since I and the Father are one,"John 10:29,30 .