Each of the various pieces of armor points us to Christ. The belt of truth is the belt that girds the messianic King (Isaiah 11:5). The breastplate of righteousness and the helmet of salvation come from the divine warrior’s arsenal (Isaiah 59:17). The feet shod with gospel readiness are the feet of those who proclaim the arrival of Messiah’s kingdom (Isaiah 52:7). God himself is the shield of faith (Genesis 15:1). The sword of the Spirit, the word of God, is the weapon wielded by the promised servant of the Lord (Isaiah 49:2).

Nearly all Christians are familiar with the armor of God in Ephesians 6:10–20. But fewer are aware that the armor Paul describes traces its roots back to the Old Testament. In fact, the armor given to the Christian for his fight against the forces of sin and darkness is quite literally God’s armor — armor designed for and worn by God first and foremost. We fight and stand firm against Satan only in the strength that comes from the victory that Christ has already won for us.

This is why each of the various pieces of armor points us to Christ. The belt of truth is the belt that girds the messianic King (Isaiah 11:5). The breastplate of righteousness and the helmet of salvation come from the divine warrior’s arsenal (Isaiah 59:17). The feet shod with gospel readiness are the feet of those who proclaim the arrival of Messiah’s kingdom (Isaiah 52:7). God himself is the shield of faith (Genesis 15:1). The sword of the Spirit, the word of God, is the weapon wielded by the promised servant of the Lord (Isaiah 49:2).

Christ Our Conqueror

In other words, God clothes us with nothing less than his own armor, the same armor that Christ has already worn on our behalf in his lifelong struggle with the mortal enemy of our souls, Satan himself. Jesus is no armchair general, who hands out the equipment but then watches the fighting from a safe distance. No, he has himself worn the armor and won the victory in our place! You are called to wear the Christian armor not because that’s what Jesus would do if he found himself in a similar situation to yours; you are called to wear God’s armor because that is what Jesus already has done, wearing God’s armor all the way to the cross.

Jesus stood firm against Satan’s schemes throughout his earthly life and ministry. Each of those specific temptations to which we have given in this week — lust, gossip, anger, pride, self-exaltation, lying, coveting — is a temptation he faced and stared down in your place. What is more, Jesus laid his life down at the cross for you, thereby accomplishing the victory that pours out God’s sanctifying Spirit into your life. Because of his victorious life, death, and resurrection, the same power that raised Christ up from the dead is now at work inside you and me through the ongoing work of the Spirit, raising us from spiritual death to new life. (In Ephesians 6:10, Paul echoes a trio of Greek words that he uses in Ephesians 1:19–20 to describe God’s power in the resurrection.)

Holiness Belongs to the Lord

However, the ongoing sanctifying work of the Spirit in your life is not ultimately under your control. In John 3, Jesus compares the process of becoming a Christian to birth. Just as a baby doesn’t have control over the time and circumstances of her birth, so God chose when to regenerate you and bring you to faith in Christ. But even after a child is born, he does not decisively control his own physical growth. He may wish to be taller or shorter, but wishing won’t make it so — or hasten the natural (slow) processes of physical growth. In the same way, we are not ultimately in control of the process of our spiritual growth. Sanctification is decisively God’s work from beginning to end (Philippians 1:6; 1 Thessalonians 5:23–24).

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