The book opens with a chain of revelation that centers in Jesus (Rev 1:1-3). He is the first person mentioned in the book, and the One who passes the revelation on to John (Rev. 1:1). The chain of revelation moves from “God” to Jesus and from Jesus to John through an angel and from John to the readers and hearers of his book (1:1-3). What God gave to Jesus is called “the revelation of Jesus Christ” (1:1). What Jesus passed on to John is called “the testimony of Jesus” (1:2), “the things that he saw” (Greek: hosa eiden). What John passed on to his readers was “the words of this prophecy” (1:3), what John wrote.
This chain of revelation is important for Seventh-day Adventists. It indicates clearly that the “testimony of Jesus” here is not the book of Revelation itself, which is what John wrote (1:3), it is the visionary gift that John saw (1:2). The remnant of Rev. 12:17 will later also have the “testimony of Jesus,” a visionary gift similar to the one John had.
So the Prologue points to Jesus as the central figure of Rev. The book is a revelation from Jesus and about Jesus (1:1). Jesus is qualified for His special role by his death, resurrection and heavenly reign (1:5a). Through these He loves us, has freed us from our sins by His blood (1:5b), and made us a kingdom and priests (1:6a). In the End, He will also come with the clouds (1:7).