Donald C. PosterskiPosterski is director of church relations with World Vision International, based in Monrovia, California. He leads global initiatives relating to spiritual formation, Christian witness and church partnerships. He holds three doctoral degrees and servs as research professor of Christianity and culture at Tyndale University College and Seminary. He has written numerous books, including Why Am I Afraid to Tell You I'm a Christian? (IVP). Posterski is currently based in Toronto, Ontario. Read More Read Less