Dr. Cecil M. Robeck Jr. is senior professor of church history and ecumenics and special assistant to the president for ecumenical relations. His recent historical research centers on the Azusa Street Mission and Revival and its African American pastor William Seymour. His recent publications in the field of ecumenics have focused on the Holy Spirit, the Church, unity in the Pentecostal perspective, and potential contributions the Pentecostal movement can make to the world Christian movement. An ordained minister with the Assemblies of God, Robeck has also worked on ecumenical issues for 35 years. He has been a member of the World Council of Churches’ Commission on Faith and Order since 1991. He has worked with the Vatican since 1985 and has served as the co-chair of the International Catholic–Pentecostal Dialogue since 1992.