Revelation 5:2

2. Strong angel Personal physical vigour is implied in the word strong, as in Revelation 10:1; Revelation 18:21. The present angel is strong, as being herald and challenger for God. Who is competent to break the seals that Jehovah has stamped? Who may reveal the secrets of the future, “which the Father has reserved in his own power?” Acts 1:7. Dusterdieck’s statement, that as the seven trumpets spring from the seventh seal, and the seven vials from the seventh trumpet, so the Apocalyptic revelation is at first all enclosed in the seals, is nearly true. But the sixth chapter is not in the real series, but a contrastive picture without, and over against, the seals. And as this strong angel is without the real series, so the parallel strong angel of chapter x is outside the series, both being one of the personal managers of the panorama. And as the challenging question of this verse dimly suggests Michael, so Gabriel seems suggested by Revelation 10:1; where see note.

A loud voice Which (next verse) was so loud and strong as to peal through heaven and earth.

Who is This may be an allusion to the name Michael, which signifies, Who is like God?

Worthy If force could have torn up the divine seals, the strong angel who issues the challenge might, perhaps, have accepted the task. It was, however, the highest worthiness, desert, dignity, alone which could presume to open the divine seals of futurity.