Revelation 5:2
And I saw a strong angel, proclaiming with a great voice, "Who is worthy to open the book, and to loose its seals!"
Revelation 5:5
and one of the elders says to me, "Weep not; behold, the Lion Who is of the tribe of Judah, the root of David, prevailed to open the book, and its seven seals.
Revelation 18:21
And a strong angel took up a stone, as it were a great millstone, and cast it into the sea, saying, "Thus with violence shall Babylon, the great city, be cast down, and in nowise be found any more!
Revelation 10:1
And I saw another strong angel, descending out of Heaven, clothed with a cloud, and the rainbow was upon his head, and his face was as the sun, and his feet as pillars of fire.