Over the past few years, pastor and author Kevin DeYoung has emerged as a leader with a knack for applying timeless truths to contemporary issues. We were curious about his take on spiritual warfare. It turns out he'd addressed the topic recently with his characteristic thoughtfulness and biblical depth. The following is adapted from The Gospel Coalition's website, where DeYoung is a regular blogger.

And I heard a loud voice in heaven, saying, 'Now the salvation and the power and the kingdom of our God and the authority of his Christ have come, for the accuser of our brothers has been thrown down, who accuses them day and night before our God. And they have conquered him by the blood of the Lamb and by the word of their testimony, for they loved not their lives even unto death.'" (Rev. 12:10-11 ESV).

Satan is an accuser and a deceiver. In both cases his weapons are words, which is why we must overcome him with the word of our testimony.

In other words, it is through our ...