Some churches are like revolving doors: they may be good at getting people in, but at the same time, other people are going out. Mission needs to pay attention not only to reaching more people with the Good News of God’s love in Christ, it also needs to ask why people leave the faith. As we shall see in a forthcoming post about Matthew 28, mission is about discipleship – and that is a long term haul, not a one-off decision. One person who has looked into this issue is Andy Frost. His book ‘Losing Faith‘ is worth a read, as is this interview with him and this document he wrote for the Methodist Church.