Paul closes his letter with a word to the warrior: This war has already been won, and it is winnable. It was won by Jesus at the cross, and therefore we can win it every day by arming ourselves with the protections and weapons He has given us. His adoption and redemption of us fills us with the strength grounded in His resurrection life. Jesus is working out all things according to the purpose of His will, and as we stand in that will, we will experience the spiritual power of His indwelling Spirit. This power will show itself in our unity with others of like-minded faith, despite all of our differences. It will show itself in our ability to break from sinful patterns and behaviors. It will show itself when we use our spiritual gifts for the building up of the Church. We are empowered to walk in the light—righteousness, goodness, and truth. And we will be strong to stand against any spiritual battle mounted against us.
Finally, when all is said and done, the power of God in us is a vibrant and life-altering power, enabling us to live in spiritual victory, without fear or faltering. God has gifted us with everything necessary to stand our ground against any spiritual foe or problem. He has given us the truth about himself, ourselves, and the world. He has given us an example of righteousness and freed us from sin that would keep us from it. He himself is the peace needed for reconciliation with God and with our fellow human beings. We have evidence for what we believe and have received a more-than-adequate foundation to trust God for our present and future. We have been rescued from sin so that we can walk in the newness of life, and we have His word for information, meditation, and correction. In other words, we have been thoroughly equipped for every possible contingency, even in our weakness, to be able to respond with both truth and power. We not only have a Warrior inside, but we can also be warriors inside.