This week I’ll be blogging about the dramatic rise of Pentecostalism. This a phenomenon that has given rise to very little discussion in the UK. That’s a mistake. The millions of people – mostly living in poverty in the Global South – turning to this very different kind of Christianity constitutes one of the biggest social changes in the world at the moment. It also represents one of the most significant evolutions of Christianity since the reformation. In short, if you are interested in politics, religion or society then you cannot afford to ignore the new power of Pentecostalism.