And they sung a new song, saying, Thou art worthy to take the book, and to open the seals thereof: for thou wast slain, and hast redeemed us to God by thy blood out of every kindred, and tongue, and people, and nation; (Revelation 5:9) *1/ A new song. 2/ The singers. 3/ What they sang.* **Sermon Summary:** The sermon centers on Revelation 5:9, highlighting the worthiness of Jesus Christ to open the sealed book due to His sacrificial death and redemptive work. It explores the 'new song' sung by the redeemed from every nation, emphasizing that salvation is achieved solely through the blood of the Lamb. The message contrasts Satan's kingdom with God's sovereign plan, assuring believers of ultimate victory and the establishment of a new creation. By examining the context of Revelation, the preacher illustrates how Christ's authority supersedes all earthly and spiritual powers. The congregation is encouraged to join this heavenly chorus by recognizing their own redemption and living in faithful obedience.