Revelation 5 provides us with a reminder that Jesus is not done with changing history yet. John sees a book sealed with seven seals, but no one is found who is worthy to open it until they come to Jesus Christ.
Rev 5:12 Saying with a loud voice, Worthy is the Lamb that was slain to receive power, and riches, and wisdom, and strength, and honour, and glory, and blessing.
Rev 5:13 And every creature which is in heaven, and on the earth, and under the earth, and such as are in the sea, and all that are in them, heard I saying, Blessing, and honour, and glory, and power, be unto him that sitteth upon the throne, and unto the Lamb for ever and ever.
Rev 5:14 And the four beasts said, Amen. And the four and twenty elders fell down and worshipped him that liveth for ever and ever.
Again, it seems that this is something that points towards the uniqueness of Jesus Christ. For those who want to believe that Jesus was just a good teacher who was not divine in any way, this passage seems to take issue with that claim. After all, if Jesus was just another human that the rest of us who had an unnatural dose of wisdom, then why would He receive all of the special acknowledgment in heaven? What would set Him apart from us that would make Him worthy to open the book?
Jesus was fully man and fully God. Even though it is somewhat hard to comprehend this type of union, He is undoubtedly unique. No angel or person could take His place. As we progress through Revelation, Jesus naturally has a large part to play, but here we begin to understand just how special He is and how He is the unique opener of the book.