padre pio. each year when planning this liturgy, brothers will get together, dominican brothers will get together and try and identify certain saints that represent a good cross-section of the church. >> to this glorious saint, i know by experience, to help us in all. and our lord would have us understand that -- >> so you'll have some men and some women, some who were priests and religious, and some who were lay people, some who were martyrs and some who just lived extraordinarily holy lives. pope john paul ii who many consider to be a saint, and might one day be a saint, said that they're the source and origin of renewal during every difficult time in the history of the church. and so not only are we pointing to these different saints and celebrating all of the good things during their lives, but we're hopefully encouraging one another to become the saints of this age. >>> at the vatican on wednesday, pope benedict xvi held a special service to mark the 500th anniversary of the sistine chapel.