1. Exposition

Who is the mighty angel John saw?

Revelation 5:2 (ESV)

2 And I saw a mighty angel proclaiming with a loud voice, “Who is worthy to open the scroll and break its seals?”

We are not told his name and so it is not important. It is enough for us to know that God had one of his mighty angels make a loud proclamation on his behalf throughout his world concerning this scroll.