Revelation 10:10, You must prophesy again. It appears that the Book of Revelation was written in two parts. Part one was likely written before A.D. 70 when the apostles, based on prophecies in Yeshua’s Olivette discourse, expected the end of the age to occur followed by the second coming.
Part two was likely written toward the end of John’s life at the end of the first century. If these conjectures are correct, then Revelation part one ends at the Rev 10:11 and Revelation part two begins at Rev 11:1.
Part two is the fulfillment of Yeashua’s prophecy to John that he must prophesy again. (For more info on this subject, see Restoring the Original Bible, pp. 327–330 by Ernest L. Martin and Beyond Acts, pp. 294–299, by Paul R. Finch).