The book sealed with seven seals:
Revelation 5:1 And I saw on the right hand of him that sat upon the throne a book, written within and on the back, sealed with seven seals. Revelation 5:2 And I saw a strong angel proclaiming with a loud voice, Who [is] worthy to open the book, and to break its seals? Revelation 5:3 And no one was able in the heaven, or upon the earth, or underneath the earth, to open the book, or to regard it. Revelation 5:4 And *I* wept much because no one had been found worthy to open the book nor to regard it. Revelation 5:5 And one of the elders says to me, Do not weep. Behold, the lion which [is] of the tribe of Juda, the root of David, has overcome [so as] to open the book, and its seven seals. Revelation 5:6 And I saw in the midst of the throne and of the four living creatures, and in the midst of the elders, a Lamb standing, as slain, having seven horns and seven eyes, which are the seven Spirits of God [which are] sent into all the earth: Revelation 5:7 and it came and took [it] out of the right hand of him that sat upon the throne. Revelation 5:8 And when it took the book, the four living creatures and the twenty-four elders fell before the Lamb, having each a harp and golden bowls full of incenses, which are the prayers of the saints.
which only the Lamb that was slain is worthy to open.
Revelation 5:9 And they sing a new song, saying, Thou art worthy to take the book, and to open its seals; because thou hast been slain, and hast redeemed to God, by thy blood, out of every tribe, and tongue, and people, and nation, Revelation 5:10 and made them to our God kings and priests; and they shall reign over the earth. Revelation 5:11 And I saw, and I heard [the] voice of many angels around the throne and the living creatures and the elders; and their number was ten thousands of ten thousands and thousands of thousands;
Therefore the elders praise him, having confessed that he redeemed them with his blood.
Revelation 5:12 saying with a loud voice, Worthy is the Lamb that has been slain, to receive power, and riches, and wisdom, and strength, and honour, and glory, and blessing. Revelation 5:13 And every creature which is in the heaven and upon the earth and under the earth, and [those that are] upon the sea, and all things in them, heard I saying, To him that sits upon the throne, and to the Lamb, blessing, and honour, and glory, and might, to the ages of ages. Revelation 5:14 And the four living creatures said, Amen; and the elders fell down and did homage.