  When does God call? From urlLink Howard Culbertson , a professor of missions at Southern Nazarene University. When does God call people to long-term missionary service? * 21% were called as a result of a missions education service in their local church * 20% felt God calling them after listening to missionary speakers * 19% were called because of their own family's missions vision and conversations * 10% heard God's call through reading missionary books 
