10 Finally, be strong in the Lord and in his mighty power. 11 Put on the full armor of God, so that you can take your stand against the devil’s schemes. 12 For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms. 13 Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground, and after you have done everything, to stand. 14 Stand firm then, with the belt of truth buckled around your waist, with the breastplate of righteousness in place, 15 and with your feet fitted with the readiness that comes from the gospel of peace. 16 In addition to all this, take up the shield of faith, with which you can extinguish all the flaming arrows of the evil one. 17 Take the helmet of salvation and the sword of the Spirit, which is the word of God.
18 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 Lord’s people.
In this passage the Full Armor of God is actually Roman armor because that is what the Jews were used to seeing. The Romans wore their everyday tunics under their armor, the only problem was that their tunic is floor length! Men, try to run and fight in a floor length dress.
So they would wrap up their tunic up and tuck it into their belt so their legs would be free to run, jump, and fight. So when we have the belt of truth we will not be fooled or restricted in our walk with the Lord and the daily fight against the devil.
The breastplate was a central part of the Roman soldier's armor—it provided protection for the torso, which contains vital organs like the heart, lungs and so on. Without a breastplate, a soldier would be asking for death, as any attack could instantly become fatal. With a sturdy breastplate, the very same attacks become ineffective and