Then I heard a loud voice in heaven say:
“Now have come the salvation and the power
and the kingdom of our God,
and the authority of his Messiah.
For the accuser of our brothers and sisters,
who accuses them before our God day and night,
has been hurled down.
11 They triumphed over him
by the blood of the Lamb
and by the word of their testimony;
they did not love their lives so much
as to shrink from death. (Revelation 12:10-11 NIV)
Verse 11 explains how true believers have triumphed over Satan. It is the end-times believers, the so-called ‘tribulation saints” who are probably in view here, but the theology applies to all believers. We have all defeated Satan not by our own self-righteousness, but “by the blood of the Lamb,” Who died for us and took our sins away. Our triumph is also reflected in “the word” of our “testimony.” Our testinomy includes both our verbal confession of faith and our genuine actions. These actions do not save us, but they do demonstrate that we have been changed by the blood of Christ, and therefore Satan’s accusations are revealed to be empty, without substance. Some Christians are blessed with another way to demonstrate their victory over Satan: Martyrdom. When we die for Christ we prove that Satan has no hold over our souls.