The origins of the Regnum Edinburgh 2010 Series can be traced to a lecture given in Edinburgh by John Pobee of Ghana in 2000. Pobee highlighted the importance of the upcoming centenary of the Edinburgh 1910 World Missionary Conference. This prompted a series of annual conferences in Scotland that yielded the material for Volume 1 of the Series. It also resulted in the international meeting that identified the themes on which the Edinburgh 2010 study process, conference and publications would be concentrated. A distinctive unifying thread in a diverse series of studies of Christian mission is the pneumatogical turn in Missio Dei thinking that is evident in this literature.