Revelation 5:2

and I saw a powerful angel proclaiming with a loud voice, "who is worthy to open the book, and to loose the seals thereof."

Revelation 5:5

and one of the elders said to me, weep not: behold, the lion of the tribe of Juda, the offspring of David, hath prevailed to open the book, and to loose the seven seals thereof.

Revelation 18:21

Then a mighty angel took up a stone like a great milstone, and threw it into the sea, saying, "thus with violence shall that great city Babylon be thrown down, never to be found any more.

Revelation 10:1

Then I saw another mighty angel come down from heaven, invested with a cloud, a rainbow was upon his head, his face was like the sun, and his feet like pillars of fire.

Treasury of Scripture Knowledge

Summary

Revelation 5:2

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

Who

Revelation 5:5

Bible References

Who

and one of the elders said to me, weep not: behold, the lion of the tribe of Juda, the offspring of David, hath prevailed to open the book, and to loose the seven seals thereof.