Thematic Bible: Celebrated by the redeemed

And when He had taken the book, the four living beings and the twenty-four elders fell down in front of the Lamb [i.e., to worship Him]. Each one of them held [in his hands] a harp and a golden bowl full of incense, which are the prayers of the saints [See Psa. 141:2; Rev. 8:3-4]. And they sang a new song [which went like this]: "You deserve to take the book and break the seals on it, for you were killed and, with your blood, you purchased people for God from every tribe and language and race and nation, and you made them into a kingdom and a priesthood for [serving] our God, and they will rule on the earth." read more.
Then I looked, and heard the voice of many angels surrounding the throne and the living beings and elders. They numbered in the tens of thousands, and thousands and thousands [more]. [Note: The Greek says "myriads of myriads"]. They were saying in a loud voice [See Note at 4:8], "The Lamb, who was killed, deserves to receive power and wealth and wisdom and strength and splendor and praise." And I heard every creature in heaven, on the earth, under the earth, on the ocean and everything in them, saying [See Note at 4:8], "May there be praise and honor and splendor and power forever and ever, to God who sits on His throne and to the Lamb." And the four living beings said, "May it be so." And the elders fell down and worshiped.

After seeing [all] these things, I looked and there [I saw] a huge crowd, which no one could count, from every nation, and tribe, and race, and language group standing in front of the throne [of God] and in front of the Lamb. They were dressed in white robes and had palm tree branches in their hands. And they called out in a loud voice, saying, "Salvation comes from [or, "belongs to"] our God, who sits on His throne, and from [or, "to"] the Lamb." And all the angels were standing around the throne and around the [twenty-four] elders and the four living beings. And they fell down on their faces in front of the throne and worshiped God, read more.
saying [See Note at 4:8], "May it be so; May there be praise and splendor and wisdom and thanksgiving and honor and power and strength to our God forever and ever. May it be so."