 The Testament of Pope Pius XII was published immediately after his death . Pope Pius XII 's cause of canonization was opened on 18 November 1965 by Pope Paul VI during the final session of the Second Vatican Council . In May 2007 , the congregation recommended that Pius XII should be declared Venerable . Pope Benedict XVI did so on 19 December 2009 , simultaneously making the same declaration in regard to Pope John Paul II . 
