Wherefore take unto you the whole armor of God, that ye may be able to withstand in the evil day, and having done all, to stand. – Ephesians 6:13
Paul was an experienced veteran in the camp of Christ; he had fought many battles under the Captain of his salvation, against his combined enemies, the world, the flesh, and the devil; he warns his fellow-soldiers of their foes and dangers, by exhorting them to take and put on nothing less than "the whole armor of God." The very same armor in which he himself fought is provided for us also. Blessed be God, that as sure as Paul fought his way through, and got safe to glory, so shall we also in this armor of God. O christian, consider, this is not an armor of flesh and blood, not what is natural to man, or is in the power of man to provide for himself; but the Lord of hosts, the God of the armies of the whole earth, hath provided it for all Christ's good soldiers.
What is this armor of God? It is the Son of his love, the Lord Jesus himself; he is the christian's whole and complete armor: in Christ alone he stands his ground, fights and conquers every enemy: without Christ we can do nothing but faint and fly. Take this whole armor: put it on, saith Paul: Christ is yours; he is the gift of God to you; "put on the Lord Jesus." Rom. 13:14. Just as one puts on armor for defence, so take, put on, arm your minds with the whole person of Christ, his love, righteousness, and atonement, all his offices, yea, the whole salvation of Christ: this, and nothing but this, what Christ is to us and hath done for us, is proof against every enemy in the evil day of battle. That ye may be able to stand: O soldier, Christ is your strength; your standing is by his power: against all the wiles of the devil.
Is Satan very cunning and very powerful, full of force and fraud? Is he too much for you to resist and conquer? Remember, Christ is your whole armor. Wisdom lies in the head; Christ is your head; he is to you made wisdom. Courage comes from the heart; Christ dwells there by faith. Eph. 3:17. Thus armed, you are proof against Satan's devices; you never can fall while fighting in his armor, for you shall be strengthened, by the Spirit's' might, in the inner man." Satan must first wound Christ before he can reach you ;'first conquer Christ before he can conquer you. O then, christian, look at your armor, not at your weak, defenceless self: be strong: be of good courage: shout your victory, "more than conquerors, through Christ, who loved us." Romans 8:37.