`` The Great Gig in the Sky '' , whose working title Name_conferral was `` Religion '' or `` The Mortality Sequence '' , consisted Cause_to_be_included at the debut Process_start in January of synthesized organ and various tapes of `` preachers '' either preaching Statement or reading Statement from such passages as from Chapter 5 , Verse 13 of Ephesians , a book of the Bible , or reciting The Lord 's Prayer .