Ephesians 3:16 in the King James Version stands inside Paul’s prayer that flows out of his awe at God’s saving purpose for the Gentiles and Jews in one body through Christ. After spending the earlier part of the chapter describing the “mystery” once hidden but now revealed—namely, that the Gentiles should be “fellowheirs, and of the same body” in Christ—Paul turns from explanation to intercession. The verse reads, “That he would grant you, according to the riches of his glory, to be strengthened with might by his Spirit in the inner man.” It is not a detached inspirational line but a deliberate request shaped by the whole message of the epistle: God has already acted in Christ to reconcile, adopt, and unite; now Paul asks that believers be inwardly empowered to live in a way that matches what God has done.

The first weighty idea is that this strengthening is a gift, not a self-produced achievement. “That he would grant you” places the initiative with God. Paul is not telling the Ephesians to muster religious resolve, but asking the Father to bestow what is needed for Christian life. This matters in Ephesians, where spiritual realities are immense: believers contend not merely with human weakness but with “spiritual wickedness in high places,” and they are called to a walk of holiness, love, unity, and steadfastness. The prayer recognizes that such a calling requires divine enabling. The strength Paul requests is not primarily bodily stamina or outward success, but spiritual fortitude that comes down from God as a granted mercy.

The phrase “according to the riches of his glory” gives the measure and the atmosphere of the gift. Paul does not say God will strengthen them out of a limited store, as though giving sparingly, nor merely according to their need as they perceive it, but “according to” God’s own abundance. In Ephesians, “riches” is a repeated note: “the riches of his grace,” “the riches of the glory of his inheritance,” and here “the riches of his glory.” Glory in Scripture carries the sense of God’s weight, majesty, and radiant excellence, the manifested fullness of who He is. To be strengthened according to those riches means the source is as deep as God’s own character and the provision is in proportion to His greatness. This is meant to enlarge faith: the request is bold because the Giver is inexhaustible.

Paul then specifies what the granting looks like: “to be strengthened with might.” The language is emphatic, stacking terms of power. In the background of Ephesians is the claim that the same divine power that raised Christ from the dead is at work toward those who believe. This verse asks for that power to be experienced not only as a doctrine but as an inward reality. “Might” signals more than encouragement; it suggests a reinforcement of the soul so that believers can endure, resist, obey, love, and remain rooted when pressure comes. It also hints at warfare, not necessarily in the sensational sense, but in the ordinary, relentless struggle against sin, fear, division, temptation, and discouragement. Paul’s prayer is that the Church will not be fragile at the core.

The means of this strengthening is “by his Spirit.” This anchors the verse in the Trinity: the Father grants, the Spirit strengthens, and the surrounding verses move toward Christ dwelling in the heart by faith. The Holy Ghost is not merely an influence but the active divine agent who communicates God’s power to the believer. In Ephesians, the Spirit seals, builds unity, provides access to the Father, and fills the saints for holy living. Here, the Spirit’s work is portrayed as an inward fortifying, an interior work that precedes and supports outward obedience. The symbolism is that of an inner strengthening as a foundation, like reinforcing the beams of a house before the visible structure can bear weight. Without that strengthening, Christian life becomes either performance or collapse; with it, obedience becomes the fruit of divine life within.

The final phrase, “in the inner man,” locates the battlefield and the transformation. Paul is not praying first for altered circumstances, though he is writing as a prisoner and knows suffering; he prays for what suffering cannot directly touch unless it is allowed to: the inward person. The “inner man” stands for the deepest seat of thought, will, affection, conscience, and spiritual perception. In biblical terms it corresponds to the heart as the center of the person. This inward focus is significant because Ephesians is concerned with realities that are unseen yet decisive: being “quickened,” being “raised up” spiritually, being built into a temple, being seated in heavenly places. The outer life may be pressured, but the inner man can be made strong. The verse therefore carries a quiet but profound symbolism of true strength: not dominance, not mere resilience, but an inward capacity formed by God to hold fast to Christ.

In context, Ephesians 3:16 is the doorway into the rest of Paul’s prayer. The strengthening of the inner man is asked so that what follows can be true in experience: that “Christ may dwell in your hearts by faith,” that believers may be “rooted and grounded in love,” that they may comprehend the breadth and length and depth and height of Christ’s love, and be “filled with all the fulness of God.” Verse 16 is foundational because it seeks the inner empowerment required for love to become stable, for faith to become a dwelling place rather than a visit, and for the Church to bear the weight of divine calling without fracturing into fear or hostility. The “inner man” strengthened by the Spirit becomes the place where unity is preserved, where forgiveness is possible, where humility can be real, where purity is maintained, and where the Church can stand against darkness.

The significance of Ephesians 3:16, then, is that it frames Christian growth as a work of divine generosity rooted in God’s glory, mediated through the Spirit, and aimed at the deepest part of a person. It calls attention away from mere outward religion to the hidden workshop where God forms endurance, holiness, and love. It also teaches believers how to pray: not only for changed situations, but for inward might proportioned to the riches of God Himself. In a letter devoted to the grand scope of redemption and the practical walk of the saints, this verse is Paul’s recognition that the life of faith is sustained from the inside by God’s own Spirit, so that the people of God can live outwardly in a manner worthy of the calling wherewith they are called.