I want today to commend to each one of us the supremacy of Jesus Christ and his Gospel. It is both the supreme glory of God and the solid rock for our lives. These words don't do it justice. It's hard to find any words that do, but these by Piper do a lot better than mine:
We were made to know Christ, not do little trivial things.
I was also recently led to read a familiar passage a little differently. When I did, the emphasis lay on these words:
truth, righteousness, gospel of peace, faith, salvation, Word
They are of course the real things that comprise the "armor of God". I encourage you to likewise read Ephesians 6 with the supremacy of the Gospel in view.
One observation I took from that is that one way that the Cross breaks the enemy's power is by removing the allure of the things that he offers. When the enemy offered Jesus bread, he didn't want it because he had something better. If you're concerned about your health, the enemy can control you with something that promises health (like a meditation technique, in my parents' case). But if the Holy Spirit has given you a new heart that regards the love of God as better than life, the temptation of worldly health will have no power over you. In that way, the Gospel (truth, faith, salvation, God's word, etc.) is your armor.
Other observations about the Gospel? Comment away...