He can open the scroll.

Revelation 5:1-5, Then I saw in the right hand of him who was seated on the throne a scroll written within and on the back, sealed with seven seals. And I saw a strong angel proclaiming with a loud voice, “Who is worthy to open the scroll and break its seals?” And no one in heaven or on earth or under the earth was able to open the scroll or to look into it, and I began to weep loudly because no one was found worthy to open the scroll or to look into it. And one of the elders said to me, “Weep no more; behold, the Lion of the tribe of Judah, the Root of David, has conquered, so that he can open the scroll and its seven seals.”

There is a wisdom that will one day be revealed within this scroll, and we see that John recognized the importance of it by his weeping. We can all rejoice that the Lamb of God, now the Lion of Judah has conquered and that he is the one who is worthy to proceed. By one man, Adam, all the glory of creation has been subjected to futility; by the second Adam, Jesus Christ all will be restore to its fullness. No wonder those around the throne raised their voices to sing “Worthy are you!”

We join with the heavenly chorus to sing “Worthy are you, O Lamb that was slain!”

ESV Lectionary