Friday we read about Jesus, the lamb of God who was slaughter, being worthy to open the seal on a scroll God was holding. As it turns out, there are seven seals (seven is a number that for Biblical writers represented completion, so several things happen in sevens). When each seal is opened something dramatic happens. In today's reading one of the seals reveals the souls of Christian martyrs waiting for Christ's return and victory over evil. Throughout Revelation we are reminded over and over again about the importance of giving testimony to Christ's lordship and love.
Revelation was written to a persecuted church, a church that didn't have any power in the typical sense of the word. The main point of the Revelation is to remind the church that they are on God's side. Even though it seems like other powers (Rome, evil, pagan rulers, etc) appear stronger, God is actually in charge and God will be victorious one day. The way God conquers is through Jesus' death (the lamb that was slaughtered), and the way Christians play their part is by testifying. This is a different way of thinking about power, but it is how God calls us to think. That's a good reminder for the church today that is worried about loosing financial, social or political power. Like our Lord, we are strong when we are weak, and faithful when we testify.