Revelation 5:2

And I saw a strong angel crying with a great voice: Who is worthy to open the book, and to break its seals?

Revelation 5:5

And one of the elders said to me: Weep not: behold, the Lion of the tribe of Judah, the root of David, has the power to open the book and its seven seals.

Revelation 18:21

And a mighty angel took up a stone like a great millstone, and threw it into the sea, saying: Thus, with violence shall Babylon, that great city, be thrown down, and shall be found no more at all.

Revelation 10:1

And I saw another mighty angel coming down from heaven, clothed with a cloud; and the rainbow was upon his head, and his face was like the sun, and his feet like pillars of fire.

Treasury of Scripture Knowledge

Summary

And I saw a strong angel proclaiming with a loud voice, Who is worthy to open the book, and to loose the seals thereof?

Bible References

Who

Revelation 5:5
And one of the elders said to me: Weep not: behold, the Lion of the tribe of Judah, the root of David, has the power to open the book and its seven seals.