What is the state of Christianity today, and what might it look like in the future? In the West, the story for a long time has revolved around decline and the loss of monopoly status, but how are these shifts changing the practice of Christianity or individual belief? Similarly, the rapid growth of Christianities in the Global South has been well reported, but the continuing complex intersections of mission Christianity with indigenous religions are less well known. Large-scale flows of people across increasingly fluid borders mean that not only does immigration sometimes significantly boost Christian numbers in a given country, but that different forms of Christianity shift traditional religious landscapes. How will emerging trends such as ’reverse mission’ from the Global South affect Christianities in areas more used to sending rather than receiving missions? As the majority of believers shifts from the West to the Global South, how will issues such as homosexuality be played out theologically, politically and individually? Will new virtual churches manage to create viable long-term communities? How does new festival Christianity function in the religious life of an individual? The divergent and oftentimes contradictory state of Christianity in the modern world fuels questions about its place and future in the world: in politics, education and healthcare. This book brings together cutting edge research on the most recent changes and trends in Christianity worldwide. Contributors drawn from the USA, UK and Europe, Africa and East Asia offer an invaluable breadth of coverage, expertise and disciplinary perspective at the intersections between sociology of religion, theology, politics, education and human geography.