 Other speakers to be featured in recent events include William Willimon, Geoffrey Wainwright, William Abraham, Leonard Sweet, Don Saliers, Amos Yong, Randy Clark, Kenneth Copeland, Violet L. Fisher, Ellen Charry and Jonathan Wilson-Hartgrove.The seminary also co-sponsors the annual Change the World conference hosted by Ginghamsburg Church, which has recently included such speakers as Greg Boyd, Brian McLaren, Jim Wallis, Ron Sider, Alan Hirsch, Michael Frost, Adam Hamilton, and Ruby Payne.It also hosts and co-sponsors the Ryterband Symposium with the University of Dayton and Wright State University, which featured Jon D. Levenson in 2011 and Richard Elliott Friedman in 2012.