Dave Mckay
This novel by Dave Mckay is neither a sequel nor a prequel to his best seller "Survivors", but it is an equel. It tells the same story and covers the same period of time, but does so from a radically different Australasian perspective. If you read Suvivors first, then you will remember at the end of that book Rayford was accompanied by the other of the Two Witnesses, named Chaim. Listening and Survivors are essentially two sides of the same story, however this book takes place solely from Chaim's perspective, until the Two Witnesses meet in Jerusalem.
Read this work at the World Public Library (library card needed).