Services will be held at 3 p.m. Saturday in the Zion Lutheran Church, Helotes, for Edwin E. Belzung, 77, of 7612 Bandera Rd., a retired civil service worker who died Wednesday.  Burial will be in the Zion Lutheran Cemetery, under the direction of the Alamo Funeral Home.  Survivors include his wife, a son, two daughters, two sisters, one brother, five grandchildren and one great-grandchild.