In every battle, a soldier’s helmet protects the head—the place most vital for survival. In the same way, Paul calls believers to “take the helmet of salvation,” because the fiercest spiritual attacks often come against our minds. Satan knows he cannot steal our salvation, so he aims instead to steal our confidence in it. Doubt, fear, guilt, and insecurity are his weapons, but God has given us the truth of salvation as our defense. The helmet reminds us that our salvation rests not on what we’ve done, but on what Christ has already finished. When we fix our minds on that truth—when we believe more in His grace than in our own feelings—we can stand firm, assured that nothing and no one can snatch us out of His hand.