Perhaps you’ve heard of the Christian’s armor that must be worn to serve God faithfully. The key passage in Ephesians 6 is famous enough that you may have even handed out coloring pages to children (or colored a few yourself in days gone by). This passage is worthy of its fame among Bible students and Sunday school programs. But what is real point of it? To what end does the apostle employ his extended metaphor in light of his argument in the letter to the Ephesians?
Context matters. If we learn to read the Bible for what it is—and not simply as a collection of vibrant metaphors for vague spiritual truths—we’ll discover that some of our most familiar passages may have far more usefulness than we’d previously assumed.
Immediate Context
When Paul instructs his readers to “put on” (Eph 6:11) and “take up” (Eph 6:13) the whole armor of God, he does this to elaborate on his chief command: “Be strong in the Lord and in the strength of his might” (Eph 6:10). That first overarching command governs the paragraph and ought to guide our understanding of the armor.
But what does it mean to be strong in the Lord and in his might? Does it mean we need to do more spiritual pushups and sit ups to increase our godly muscle mass and stay in shape for some sort of invisible battle?
Most commentaries will quickly reveal that the Greek verb translated as “be strong” is in the passive voice. That means it is not primarily something we do but something that is done to us. The CSB makes the passive voice more evident by translating it as “be strengthened by the Lord and by his vast strength” (Eph 6:10, CSB). Interestingly, Paul uses the same syntax in 2 Tim 2:1, and the ESV translators chose to keep the passive voice explicit in that verse: “You, therefore, my son, be strengthened by the grace that is in Christ Jesus.”
The point is simply this: Paul’s instructions to put on and take up the whole armor of God explains, or fleshes out, what it looks like for the Christian to become strong by receiving God’s own strength. By putting on God’s own armor. And Paul did not invent this idea of God’s strength, God’s armor, because Paul knows his Bible.
Biblical Context
While Paul’s language draws in part on the vocabulary of the Roman military (after all, he likely dictated this letter while chained to one such soldier – Eph 6:20), he synthesizes the Roman imagery with that of the prophet Isaiah.
Observe Isaiah 59:17, speaking of what God does when he perceives both injustice and a lack of heroes to help:
He put on righteousness as a breastplate,
and a helmet of salvation on his head;
he put on garments of vengeance for clothing,
and wrapped himself in zeal as a cloak.
And observe Isaiah 11:5 and Isaiah 49:2, speaking of God’s Chosen One (the Messiah) who will serve him by ushering in an age of peace:
Righteousness shall be the belt of his waist,
and faithfulness the belt of his loins…
He made my mouth like a sharp sword;
in the shadow of his hand he hid me;
he made me a polished arrow;
in his quiver he hid me away.
So when Paul instructs his readers to put on and take up the whole armor of God, he speaks not of armor one wears only in honor of God. He speaks of borrowing God’s own armor, having been tailored to fit the Messiah, and now also on loan to all who follow him. “Be strengthened by the Lord and by the strength of his might.” But why do Christians require such strength? What sort of battles should they expect to face, battles that cannot be won without the empowerment of him whose mighty strength is far above all rule and authority and every name that is named (Eph 1:19-21)?
Larger Context
I believe the main idea of Ephesians is best summed up in the words of Ephesians 1:10. What is God’s plan from before the foundation of the world, for the fullness of time? “To unite all things in [Christ], things in heaven and things on earth.” This letter is a letter for unity.
Paul’s framework for unity begins with the foundation of God’s unity within himself, among the persons of the Trinity, who work together in perfect harmony to execute this plan for the ages (Eph 1:3-14, 4:4-6). The Lord, our God, the Lord is one (Deut 6:4). And that one God consists of one Spirit, one Lord, and one God and Father of all, who is over all and through all and in all (Eph 4:4-6).
The unity of all things then proceeds to encompass a cosmic unity between this one God and his people (Eph 2:1-10). God raised his son from the dead and seated him in the heavenly places (Eph 1:20). So also those who are “in Christ Jesus” have been raised with him and seated with him in those same heavenly places (Eph 2:5-6). Because none of this is granted as payment for works, but is only a gift of grace, it is available to all who simply believe (Eph 2:4-5, 8-9).
But that’s not all. God is one with himself. God is also one with his people. By implication, then, it must also be true that his people are to be one with each other. This is why the church of Jesus Christ is made up of not only Jews but also Gentiles from all nations (Eph 2:11-22). The great mystery has now been revealed through special revelation to Paul, that Gentiles are fellow heirs and members of the same body as Jews (Eph 3:1-6). Paul’s ministry is a gift of God’s grace to make this Jew/Gentile unity take place, in full sight of all the spiritual forces and powers of the universe (Eph 3:7-13).
For this reason, it requires supernatural strength from God to even fathom the depth of this uniting love of Christ (Eph 3:14-21). And it is of great importance that particular local churches now walk in the very unity to which they’ve been called (Eph 4:1-6:9). To highlight just one moment in the argument: Anger toward others is a particularly effective disunifier. We must give it special attention, lest we give the devil an opportunity to rip apart the unity God seeks to build in his church (Eph 4:26-27).
I won’t walk through all of chapters 4 through 6, but suffice it to say that Paul concludes his practical application with three pairs of hierarchical human relationships where unity is often rare to find and comes at a premium: Wives and husbands, children and fathers, slaves and masters (Eph 5:22-6:9).
Conclusion
So in the argument of Ephesians (with reference to Isaiah), what is the chief spiritual battle for which the church of Jesus Christ requires supernatural strength and God-granted armor? It is the fight to maintain unity among God’s people, of all nations and flavors (Eph 4:1-3). To maintain the unity that ought to flow from their inseparable unity with God, and from God’s own unity within himself. The very unity that threatens the dominion of darkness in the heavenly places.
Because the devil employs the full weight of his resources to disrupt the unity of the church, it is of chief importance that we recognize who our real enemy is. It is never the fellow church member who disagrees with you, annoys you, or offends you (Eph 6:12). The real enemy can be defeated only with the unifying strength of God through Christ. Real unity will therefore require truth, righteousness, and a readiness to preach peace (Eph 6:14-15). Real unity will not be maintained without faith, salvation, Scripture, or prayer (Eph 6:16-20).
Next time you get in a fight with a brother or sister in Christ—perhaps even within your own household—please let the whole armor of God strengthen you to the ends of peace and victory over the devil’s divisive schemes.
Context matters.
For more examples of why context matters, such as the widow’s mite, the love chapter, and all things work together for good, click here.
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