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. – Revelation 12:10-11 ESV
We generally think of Satan as a tempter looking for ways to keep us from Christ, or to cause us to stumble in our walk with Christ. But here he is pictured as one who accuses us before God. While Jesus elsewhere is pictured as our Advocate (1 John 2:1), or defense attorney, Satan here is pictured on the other side of the heavenly courtroom as the prosecuting attorney. And in this courtroom scene we find that we are able to overcome the accuser by two pieces of evidence. The first is the blood of the Lamb, the blood that washes away my sin. The second piece of evidence presented in my defense is my testimony, representing a life transformed by the blood of the Lamb and the presence of the Holy Spirit. Regardless what Satan may do, or accuse us of, we have victory over him, not because of ourselves, but because of what Jesus did for us, and is doing in us.