(Alessandra Tarantino | The Associated Press) Bishops attend a Mass celebrated by Pope Francis for the opening of a synod in St. Peter's Square, at the Vatican, Wednesday, Oct. 3, 2018. The synod (council) is bringing together 266 Roman Catholic bishops from five continents for talks on helping young people feel called to the church at a time when church marriages and religious vocations are plummeting in much of the West.