We need to put on the WHOLE armor of God!
The belt of truth w/o the breastplate of righteousness causes cognitive and spiritual dissonance, since it’s possible to speak of God’s truth w/o living in Christ’s righteousness. Obviously, if we have been wounded in spiritual warfare we can neither enjoy God’s peace nor be properly prepared to preach the Gospel of peace. The helmet of salvation and shield of faith assures us our victory in this battle. And with the belt of truth rightly and securely fastened around our waist, we can wield the sword of the Spirit in a full, frontal attack against Satan w/o being encumbered by a sagging loin protector in the form of doubt.