The book is a commentary on preaching from the book of Revelation. Working through the book of Revelation verse by verse, the commentary seeks to help the preacher recognize what the book (with its apocalyptic theology) invited people in antiquity to believe and do… . The book of Revelation communicates through a series of word-pictures. Allen explains each word-picture in light of its ancient setting. The commentary brings the viewpoint of the book of Revelation into conversation (through mutual critical correlation) with contemporary theology, especially process thought. The work aims to help the preacher to help the congregation identify what they can genuinely believe and confidently do. Believing that the best preaching arises from the local context, the volume does not include full sermons, but, rather, seeks to raise issues and questions that might be thought-provoking.