“The Lamb” is Jesus Christ to whom God had entrusted the course of all history (Revelation 5:6–7; see also Revelation 17:14). As the ultimate Husband he had laid down his life for his bride (Ephesians 5:25–26), the church. The Bride as a faithful wife is in turn devoted to her husband; she finds her happiness and purpose in serving him. So this Bride contrasts radically with the prostitute of Revelation 17:1–18. We had, of course, met this Bride already in Revelation 19:7.
9 Then came one of the seven angels who had the seven bowls full of the seven last plagues and spoke to me, saying, “Come, I will show you the Bride, the wife of the Lamb.”