The repetition draws the readers’ attention to the centrality of the plagues in this chapter. Notice that the plagues are mentioned directly in Revelation 15:1, Revelation 15:6, and Revelation 15:8, and quite directly again in Revelation 15:7 with the reference to the “golden bowls full of the wrath of God.” They are also mentioned indirectly in the song of Revelation 15:3–4 in the words “deeds” and “ways” and “acts.”
6 and out of the sanctuary came the seven angels with the seven plagues, clothed in pure, bright linen, with golden sashes around their chests.