Paul concluded his letter with a call for Christian strength. The Christian life is often referred to as a war. In warfare, the soldier must be strong offensively and defensively.
Christians are in a spiritual war against the forces of Satan. Paul urged the Ephesians to be wholly prepared to defend themselves by putting on the complete spiritual armor of God—not just part of it or by using some man-made parts. He listed those items (girdle of truth, breastplate of righteousness, shoes of preparation of gospel of peace, shield of faith, helmet of salvation and sword of the Spirit) that when properly fitted into one’s life will assure victory against the spiritual enemy.
The sword of the Spirit, the word of God is the Christian’s multipurpose weapon. With it, he is able to teach and convert members of Satan’s army. The word of God as a sword also helps God’s people defend themselves against the false teaching and oppression of the enemy. “It is written…”
Prayer gives one the strength and courage to face the enemy and to speak boldly in spiritual combat. Paul urged the Ephesians to use prayer not only for themselves, but for him also as he was confined in Roman chains.
There were other items of news and greetings that Paul wanted to share with the Ephesians, but he was expecting Tychicus to inform them of those things when he delivered this letter. Tychicus was a faithful friend and companion of Paul’s who was of great use to him in his work.
As in other letters, Paul closed the Ephesian letter by praying for peace, love, faith and grace from God the Father and the Lord Jesus Christ to be upon them.