Passage
put on the whole armour of God, for your being able to stand against the wiles of the devil,
put on the whole armour of God, for your being able to stand against the wiles of the devil,
Ephesians 6:9 And the masters! the same things do ye unto them, letting threatening alone, having known that also your Master is in the heavens, and acceptance of persons is not with him.
Ephesians 6:10 As to the rest, my brethren, be strong in the Lord, and in the power of his might;
Ephesians 6:11 put on the whole armour of God, for your being able to stand against the wiles of the devil,
Ephesians 6:12 because we have not the wrestling with blood and flesh, but with the principalities, with the authorities, with the world-rulers of the darkness of this age, with the spiritual things of the evil in the heavenly places;
Ephesians 6:13 because of this take ye up the whole armour of God, that ye may be able to resist in the day of the evil, and all things having done--to stand.
The verse centers on "whole", "armour", "able", "stand", "against", "wiles", and "devil". It is saying that the verse draws attention to "whole" and "armour", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 10's "As to the rest my brethren be..." into verse 12's "because we have not the wrestling with...", so "whole" and "armour" belong inside that flow. In Ephesians context, the local focus is grace, union with Christ, the church, and new creation.
A plain takeaway is to answer the verse's own emphasis on "whole" and "armour" with trust shaped by these words, not by a vague optimism outside the passage.