And when he had taken the book, the four beasts and four and twenty elders fell down before the Lamb, having every one of them harps, and golden vials full of odours, which are the prayers of saints. The four beasts - fell down before the Lamb - The whole Church of God, and all his children in heaven and earth, acknowledge that Jesus Christ is alone worthy and able to unfold and execute all the mysteries and counsels of God. See on Revelation 5:9 (note).
Having every one of them harps - There were harps and vials; and each of the elders and living creatures had one.
Odours, which are the prayers of saints - The frankincense and odours offered at the tabernacle were emblems of the prayers and praises of the Lord. That prayers are compared to incense, see Psalms 141:2 : Let my Prayer be set forth before thee as Incense. Hence that saying in Synopsis Sohar, p. 44, n. 37: "The odour of the prayers of the Israelites is equal to myrrh and frankincense; but on the Sabbath it is preferred to the scent of all kinds of perfumes." The words which are the prayers of saints are to be understood as this is my body, this signifies or represents my body; these odours represent the prayers of the saints.