(Rev 5:9 KJV)
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;
Now a new song is being sung. This new song has its focus on the redemption the Lord Jesus Christ effected through His sacrifice on Calvary. Since Christ was the one who effected redemption by Himself, He was worthy to take the book and to open it and open the seals. (Heb 1:3 KJV) Who being the brightness of his glory, and the express image of his person, and upholding all things by the word of his power, when he had by himself purged our sins, sat down on the right hand of the Majesty on high; Christ’s effectual redemption of the Elect, by His own blood, redeemed us to God, in other words, the Elect of God were reconciled unto Him. The redeemed of God can be found in every country around the world. (Mat 24:31 KJV) And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other. On the last day when God finally winds up this present sinful generation, all the Elect will be gathered from all the nations on earth. The new song always focuses on the Lord Jesus Christ who is the center of the book of Revelation.
Revelation 5:8-14