Pope Leo XIV celebrated his first Mass on Friday in the Sistine Chapel where he was elected less than 24 hours earlier, warning of the dangers caused by a lack of faith and hoping the Catholic Church could be a beacon lighting the world's "dark nights".
Leo, the former Cardinal Robert Prevost and the first US pope, looked calm as he delivered the Mass in the famous, frescoed chapel with the same cardinals who chose him to be the 267th pontiff and the successor to Pope Francis.
