Question: Which church did the author of the book, upon whose novel Jerusalem Countdown is based, found?

Context paragraphs:
The Book Club Bible: The Book Club Bible is a non-fiction anthology of literary review, with a foreword by Lionel Shriver, whose novel "We Need To Talk About Kevin" has its own prominent entry.  Aside from providing a synopsis for each book, the text also features background information on the author, suggested comparison volumes, a detailed historical context and starting points for group discussion.  The intention of the anthology is to encourage book club members to seek out and discuss important contemporary or classical works.

Jerusalem Countdown (film): Jerusalem Countdown is a 2011 Christian thriller film adapted from the speculative fiction novel of the same name novel by John Hagee.  It was directed and co-written by Harold Cronk and stars David A.R. White, Anna Zielinski, Randy Travis, Lee Majors, Stacy Keach, and Marco Khan.

Ron Arias: Ronald Francis Arias (born November 30, 1941) is a former senior writer and correspondent for "People magazine" and "People en Español".  He is also a highly regarded author whose novel "The Road to Tamazunchale" has been recognized as a milestone in Chicano literature.

John Hagee: John Charles Hagee (born April 12, 1940) is the founder and senior pastor of Cornerstone Church, a megachurch in San Antonio, Texas.  Hagee is also the CEO of his non-profit corporation, Global Evangelism Television (GETV).  He is the 5th of 6 pastors in his family, all of whom were named John Hagee, dating back to the colonial era.

Richard House: Richard House is an author, film maker and artist whose novel The Kills was longlisted for the 2013 Man Booker Prize.

Plaça de Jean Genet, Barcelona: Plaça de Jean Genet is a small, triangle-shaped square in Barcelona (the capital of Catalonia in Spain).  It's located in the southern side of El Raval, by the port and Avinguda de les Drassanes and the Catalan Gothic buildings of the Royal Shipyard, in the district of Ciutat Vella.  Its main feature is the functionalist high-rise which hosts the local Official School of Languages.  It's named after French author Jean Genet who resided in the city for a time and whose novel "The Thief's Journal" takes place in the poverty-stricken alleys of Raval.  Essayist Lluís Permanyer proposed the name in 1997.

Jerusalem Countdown: Jerusalem Countdown: A Warning to the World is a book written in 2006 by American pastor John Hagee which interprets the Bible to predict that Russia and the Islamic nations of Saudi Arabia, Syria, Egypt, Lebanon, Iraq, and Iran will invade Israel and will be destroyed by God.  This will cause the Antichrist, the head of the European Union, to create a confrontation over Israel between China and the West.  A final battle between East and West at Armageddon will then precipitate the Second Coming of Christ.  The book was published by Charisma House.

The Auction Block (1917 film): The Auction Block is a 1917 American silent drama film directed by Laurence Trimble and starring Rubye De Remer.  The film was produced by Rex Beach, upon whose novel, "The Auction Block", the film is based.  It is not known whether the film currently survives.

Christie Watson: Christie Watson (born 1976) is a British novelist whose novel "Tiny Sunbirds Far Away" won the Costa First Novel Award in the 2011 Costa Book Awards.  Her second novel "Where Women Are Kings" also won critical praise and has been widely translated.

Ruvim Frayerman: Ruvim Isayevich Frayerman (Рувим Исаевич Фраерман, 22 September 1891, in Mogilyov, Russian Empire, – 28 March 1972, Moscow, USSR) was a Soviet writer, poet, essayist and journalist.  A major component of the Socialist romanticism, Frayerman is best remembered as a children's literature author, whose novel "Wild Dog Dingo or the Tale of the First Love" (1939) became a popular Soviet film in 1962.

Supporting paragraphs: Jerusalem Countdown (film) John Hagee
Answer: Cornerstone Church