Passage
Finally, be strong in the Lord, and in the strength of his might.
Finally, be strong in the Lord, and in the strength of his might.
Ephesians 6:8 knowing that whatsoever good thing each one doeth, the same shall he receive again from the Lord, whether [he be] bond or free.
Ephesians 6:9 And, ye masters, do the same things unto them, and forbear threatening: knowing that he who is both their Master and yours is in heaven, and there is no respect of persons with him.
Ephesians 6:10 Finally, be strong in the Lord, and in the strength of his might.
Ephesians 6:11 Put on the whole armor of God, that ye may be able to stand against the wiles of the devil.
Ephesians 6:12 For our wrestling is not against flesh and blood, but against the principalities, against the powers, against the world-rulers of this darkness, against the spiritual [hosts] of wickedness in the heavenly [places].
The verse centers on "finally", "strong", "lord", "strength", and "might". It is saying that the verse draws attention to "finally" and "strong", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 9's "And ye masters do the same things..." into verse 11's "Put on the whole armor of God...", so "finally" and "strong" 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 "finally" and "strong" with trust shaped by these words, not by a vague optimism outside the passage.