Claiming to base their beliefs solely on the Bible, Christadelphians differ from mainstream Christianity in a number of doctrinal areas. For example, they reject the Trinity and the immortality of the soul, believing these to be corruptions of original Christian teaching. They were initially found predominantly in the developed English-speaking world, but expanded in developing countries after the Second World War. Congregations are traditionally referred to as ‘ecclesias’ and would not use the word ‘church’ due to its association with mainstream Christianity, although today it is more acceptable!!