Revelation 5:2

And I saw a strong angel proclaiming with a loud voice, "Who is worthy to open the scroll and break its seals?"

Revelation 5:5

Then one of the elders said to me, "Weep not; 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."

Revelation 18:21

Then a mighty angel took up a stone like a great millstone and threw it into the sea, saying, "So will Babylon, the great city, be thrown down with violence, and will not be found any longer.

Revelation 10:1

Then I saw another mighty angel coming down from heaven, wrapped in a cloud, with a rainbow over his head; and his face was like the sun, and his legs 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
Then one of the elders said to me, "Weep not; 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."