In addition to all this, take up the shield of faith, with which you can extinguish all the flaming arrows of the evil one. Take the helmet of salvation and the sword of the Spirit, which is the word of God. And pray in the Spirit on all occasions with all kinds of prayers and requests. With this in mind, be alert and always keep on praying for all the saints. The first weapon is the belt, or harness of Truth.
Truth is the first mentioned, because it is the most vital, it is the basis for everything else.
Even if we really possess righteousness and salvation, even if our faith is great, we will be a poor soldier without truth. Just as the Roman soldier's belt or harness held all of his implements of warfare together, it is truth that gives us the framework within which to work. The coming of the lawless one will be in accordance with the work of Satan displayed in all kinds of counterfeit miracles, signs and wonders, and in every sort of evil that deceives those who are perishing. They perish because they refused to love the truth and so be saved. The next piece is the Breastplate, the armor that protects the heart and vital parts of the soldier.