A.T. Robertson Commentary Revelation 5:4

"And I wept much, because no one was found worthy to open the book, or to look thereon:" — Revelation 5:4 (ASV)

I wept much (εγω εκλαιον πολυ). Imperfect active of κλαιω, picturesque, descriptive, I kept on weeping much; natural tense in these vivid visions (1:12; 2:14; 5:4,14; 6:8,9; 10:10; 19:14; 21:15). Perhaps weeping aloud.

Was found (ευρεθη). First aorist passive indicative of ευρισκω.

Worthy (αξιος). Predicative nominative after ευρεθη.