This reading from the book of Revelation tells us that the believers in Christ triumphed over Satan and everything evil by the Blood of Christ, and by their testimony about Jesus Christ. 

Notice that one of the things included in Christians' triumph over evil is their testimony about Jesus Christ. Their testimony about Jesus Christ is basically their story with the Lord. About how they were sinners deep in sin, but then they met Christ in some form, and then they became believers, and had their sinful lives transformed into righteous lives through Lord Jesus Christ's righteous sacrifice on the cross. You also must go out and testify, for who knows what great deed the Lord would do with your testimony! When you testify your testimony about Jesus Christ and all the righteous things he has done for you to save you from total destruction, the Lord can use that testimony to strengthen the faith in all believers, or to help atheists to come and believe in the Lord. He may even use your testimony to transform the life of someone on the verge of suicide. The point is, your testimony about Jesus Christ can really help someone to have faith in Jesus Christ and so by having the true faith in Christ, by both believing in Christ and living his teachings, they may have life, all because you testified about Lord Jesus Christ, and the Lord used your story with him to help others believe in Christ Jesus.

If you are fearful of testifying your story about Lord Jesus Christ, then let me give my testimony about Jesus Christ, so that you may go out and testify your own story with the Lord:

I am raised in the Catholic Church, and when I was young, I did like going to Chruch, but I did not take it too seriously. Just thought at the time that it was a normal part of life, once a week. Then when I was around 11-14 years old, I was engulfed in a serious sin. This sin was unrelenting, and I had a very hard time getting out of this nightmarish sin that was from Satan the devil. This sin put me in a temporary depression for a time. Alas, when there was no hope, I went up to my room to give the most passionate and faithful prayer I probably would ever utter, asking the Lord Jesus himself to forgive me of my sins, and to deliver me out of this evil sin once and for all through his power and holiness. Christ Jesus spoke to me, and at that moment, I knew I would be delivered out of that sin. I stayed faithful to Christ, went to Holy Confession to confess that sin, was absolved of that sin, and I gave more and more of my time to Jesus Christ. To this day, I have been freed from that sin, and I will never go back to that sin again. And I really grew to Love Jesus Christ so much, for every single day I would remember how he delivered me from that sinful sin, and now I live and walk with the Risen Christ, holding faithful to God's New Covenant, and holding faithful to Christ's teaching. The path was not easy at all, in fact it was hard, but the reality of being free from that sin is so worth it. And so now I created Dauntless Corsair through the guidance of the Holy Spirit to help others give their testimony about Christ, just like I just did.

So go out and give your testimony about Jesus Christ. May the peace and Love of God be with you always, to the very end of the age. Amen.