Unchurched Next Door: Understanding Faith Stages as Keys to Sharing Your FaithThis award winning national interview survey of unchurched people sheds insight on who the unchurched next door are, what objections they raise, and how to connect with them, taking into account their various faith stages based on the Rainer scale with rankings from U5 to U1. In a national survey conducted by author Thom Rainer and his staff, eight out of ten unchurched men and women said they would come to churchif only someone would invite them.