The Rev. J. James Gerhart, assistant rector of St. Andrew's Episcopal Church, will be the celebrant Saturday and Sunday. Gerhart joined the staff in January 1990 and works with the youth groups, Sunday school, acolytes, religious education and the preschool. He has been active counseling and helping those with addictive disease and co-dependency. Gerhart is completing his ministry at St. Andrew's and will be leaving at the end of March. St. Andrew's is on Deltona Boulevard and Founder Road.