Dr. Joshua T. Searle is an evangelical Christian, author and co-author of books, teacher and volunteer. He studied in Oxford, Prague and Dublin, and taught theology and philosophy in Germany, Ireland, the United Kingdom and Ukraine. About Ukraine Joshua Searle published a brochure entitled "Church without Walls: Post-Soviet Baptists after the Ukrainian Revolution, 2013-2014". In Theology in the Post-Christian World, Joshua Searle details his views on how the Christian movement should change in the modern postmodern era, when the so-called "Christian world" (Christendom) has become a thing of the past. In particular, Joshua Searle speaks of the total crisis of the "institutional church" and believes that the future belongs to the "church without walls", which does not seek to be separated from society by a group of "elect", but acts in the world to transform society as a whole. embodying and approaching the coming of the Kingdom of God on earth. Accordingly, it is the Kingdom of God, not the church or "correct doctrine," that must be at the heart of renewed theology in the new "post-Christian world."