Parkyns highlights the developments of the Church in the 19th and 20th centuries, citing the unprecedented missionary expansion and great revivals, including the Pentecostal restoration and charismatic movement. 'Springtime and harvest,' he observes, 'are all in one.' He then concludes the book of Revelation with a bit of review of chapter 14, historical fulfillment of the vials in chapter 15, and a panoramic sweep to the end of the book.
