Continuing the exposition of Ephesians, the sermon turns to Ephesians 6:18-20, the final section of Paul's teaching on the armor of God: "praying at all times in the Spirit, with all prayer and supplication... keep alert with all perseverance, making supplication for all the saints, and also for me." The sermon opens by noting a structural point often missed: unlike the belt, breastplate, shoes, shield, helmet, and sword listed earlier, praying in the Spirit is not itself a piece of armor. It has no corresponding weapon or item. Instead, it functions like the fuel or battery of a car — the power source that makes every other piece of equipment actually work. A soldier can wear flawless armor and wield a sharp sword, but without the Spirit's power behind it, none of it accomplishes anything. The gospel is proclaimed through "shoes of readiness," for instance, but conviction of sin and conversion happen only through the Holy Spirit's work, never through human eloquence alone. Even Christ, full of the Spirit and led by the Spirit into the wilderness (Luke 4:1), depended on the Spirit's leading when he wielded the sword of the Spirit against Satan's temptations — so how much more must believers depend on the Spirit rather than their own strength.

The sermon insists that "praying in the Spirit" is not a mystical experience of being overtaken or losing consciousness. Rather, it is prayer moved and led by the Holy Spirit, and its clearest mark is the assurance of being God's child. Romans 8:14-16 is read: those led by the Spirit of God are God's children; they have not received a spirit of slavery to fall back into fear, but the Spirit of adoption, by whom believers cry "Abba, Father," and the Spirit bears witness with their spirit that they are God's children. This, the sermon argues, is the key to Paul's instruction — prayer flows from the assurance that God is not merely a task-master to satisfy but a sovereign, wise, loving Father, and that relationship transforms prayer from burdensome duty into privilege. The preacher illustrates this with a story of taking his family on a city tour of Melbourne on a free-transit day, explaining that a good parent's joy is not merely providing for a child's needs but spending unhurried time together — talking, laughing, hearing what is on the child's heart. In the same way, God as Father delights not only in supplying needs but in relationship itself, and "praying at all times" means living in constant relational awareness of the Father's presence in every circumstance, not a mechanical non-stop recitation.

The sermon then confronts the problem of unanswered prayer through Paul's own situation: he wrote this letter from prison, and though the Ephesian church surely prayed for his release, tradition holds he died in prison. Even so, praying in the Spirit gave Paul and the church strength, because it rests on trusting that God's sovereign will is good even when unexplained — like a wise parent who must take away a beloved but recalled toy despite a child's tears, because the parent understands what the child cannot. The animated telling of Joseph's imprisonment is used similarly, with Joseph singing "You know better than I... I've let go the need to know why" while waiting years in prison for reasons he could not see, trusting that God is shaping believers to be more like Christ rather than merely comfortable.

The sermon adds a second dimension: "keep alert," since believers are in real spiritual warfare, as 1 Peter 5:7-8 warns that the devil prowls like a roaring lion. Believers are called to pray "for all the saints" — a term the sermon insists (against a narrower Catholic usage) applies to every believer sanctified by the Spirit, not a select class of clergy — and mutual intercession is modeled through the song "When you pray, will you pray for me?" Prayer should also expand in scope, following the pattern of the Lord's Prayer: for God's name to be hallowed, for his kingdom and justice to come, for his will to be done, and only then for personal needs — with Paul's own specific request being not release from prison but boldness to proclaim the gospel.

The sermon closes on assurance of victory: the spiritual battle belongs to the Lord, already decisively won in Christ's death and resurrection even though the war continues. Romans 8:26-27 and 8:34-37 are read to show that believers are "more than conquerors" not through their own strength but because the Spirit intercedes for them with groanings too deep for words, and the risen Christ, seated at God's right hand, continually intercedes for them by name — like a shepherd who knows each sheep individually. An illustration of a long-distance runner who laps his opponent entirely closes the sermon: believers do not merely narrowly win the spiritual race, but are made "more than conquerors" through the One who loved them.

Bible Verses Used

• Ephesians 6:18-20: the primary text — praying at all times in the Spirit, staying alert, and interceding for all the saints and for Paul's boldness in the gospel.

• Luke 4:1: shows Christ himself full of and led by the Spirit before wielding the sword of the Spirit against temptation, modeling dependence on the Spirit.

• Romans 8:14-16: grounds "praying in the Spirit" in the Spirit's witness that believers are God's adopted children who may cry "Abba, Father."

• 1 Peter 5:7-8: calls believers to cast their anxiety on God while staying sober-minded and alert against the prowling adversary.

• Romans 8:26-27: the Spirit intercedes for believers with groanings too deep for words, according to God's will, when they do not know how to pray.

• Romans 8:34-37: the risen and exalted Christ intercedes for believers, who are declared "more than conquerors" through him despite tribulation.