By Carla Hinton and Randy EllisStaff writersThe Archdiocese of Oklahoma City has revoked the authority of the Rev. Marvin Leven to serve as a priest after substantiating allegations that he had sexually abused parishioners in Enid and Edmond, archdiocese leaders said Tuesday.Archbishop Paul S. Coakley said an investigation has substantiated allegations that Leven, 94, sexually abused a minor in 1993 at St.Read more on NewsOK.com