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. (Eph 6:13)
"So...what exactly is the full armor of God?" someone asked. It is the belt of truth, the breastplate of righteousness, the shoes of readiness and peace, the shield of faith, the helmet of salvation, and the sword of the Spirit.
When a country gets ready for battle (usually) they go with the right equipment and the best there is. You would not send a soldier to fight in a jungle wearing swimming trunks and carrying a water pistol. How can expect to "repel" Satan wearing flip flops and toting a missalette?
The FULL armor of God is sparked by prayer. The soldier's belt is equipped with tool (knife, holster, pistol, extra magazines, hand grenades) and is securely fastened at his waist - easily accessible. It is the foundation of all the equipment used in battle. Jesus is our foundation when we stand against Satan. The breastplate is similar to a bulletproof vest (only not nearly as lightweight as today's Kevlar vests). Remembering that our own efforts and good works will not protect us, we must make our focus on the cross - the righteousness we seek is found in Christ. Our preparation for battle must also the Gospel - the life, death and resurrection of Jesus brought us peace with God. This redemption allows us to fight with boldness, perseverance and peace! The shield - which was generally used as protection and when overlapped one with another, could form a "wall" of protection against the enemy. It also would protect them from flaming arrows shot into the air - we cannot rely on our own abilities in this battle against Satan - by Christ alone are we protected. Our helmet is the source of total deliverance - Jesus IS our deliverance! The sword is the Word of God - it is a powerful tool when used against the enemy and under the direction of the Spirit is has great power.
In all of that, we see that Jesus is our armor! He is our truth, our righteousness, our preparation and peace, the focus of our faith, and he IS the Word of God!
My friends, we are already at war, fighting an enemy who is crafty and clever. Without the protection and guidance of Jesus, we are doomed to fail. You may not have been called to fight at this point in your life, but the time will come and you must be prepared. Start shining up that armor so that when your turn to do battle with the enemy arrises, you will already have on the full armor of God!