Ефесянам 6:13

take . . . of God--not "make," God has done that: you have only to "take up" and put it on. The Ephesians were familiar with the idea of the gods giving armor to mythical heroes: thus Paul's allusion would be appropriate. the evil day--the day of Satan's special assaults (Eph 6:12, Eph 6:16) in life and at the dying hour (compare Rev 3:10). We must have our armor always on, to be ready against the evil day which may come at any moment, the war being perpetual (Psa 41:1, Margin). done all--rather, "accomplished all things," namely, necessary to the fight, and becoming a good soldier.

In this chapter, I. The apostle proceeds in the exhortation to relative duties which he began in the former, particularly he insists on the duties of children and parents, and of servants and masters (Eph 6:1-9). II. He exhorts and directs Christians how to behave themselves in the spiritual warfare with the enemies of their souls; and to the exercise of several Christian graces, which he proposes to them as so many pieces of spiritual armour, to preserve and defend them in the conflict (Eph 6:10-18). III. We have here the conclusion of the epistle, in which he takes his leave of them, recommending himself to the prayers of the believing Ephesians, and praying for them (Eph 6:19-24).

6:13 God’s armor gives believers the ability to resist the attacks of the devil in the time of evil—when evil seems to prevail—and to keep standing firm.