"Who is worthy to open the scroll?"

(Revelation 5.2)
To open the testament is to suffer and to conquer death for humanity. NO one was found worthy to do this, netiher among the angels in heaven, nor among ment on the earth, nor among the souls of the saints who are at rest; only Christ, the Son of God, whom he says that he saw as though a lam slain, having seven horns.

What had been prophesied of him, whatever the law had mediated of him through oblations and sacrifices, it was necessary that he fulfill.

And because he himself was the testator who had conquered death, it was just that he himself be appointed God's heir, so that he might possess the property of the one who was dying, that is, the human race.

--Victorinus, Commentary on the Apocalypse (Revelation in the New Testament)