John Wesley on Revelation 5:8

And when he took the book, the four living creatures fell down - Now is homage done to the Lamb by every creature. These, together with the elders, make the beginning; and afterward, Rev 5:14, the conclusion. They are together surrounded with a multitude of angels, Rev 5:11, and together sing the new song, as they had before praised God together, Rev 4:8, &c. Having every one - The elders, not the living creatures. An harp - Which was one of the chief instruments used for thanksgiving in the temple service: a fit emblem of the melody of their hearts. And golden phials - Cups or censers. Full of incense, which are the prayers of the saints - Not of the elders themselves, but of the other saints still upon earth, whose prayers were thus emblematically represented in heaven.