Pope Francis looks on during a penitential ceremony on March 4 at St. Peter's Basilica in Vatican City. Francis has imposed new financial rules on those working to promote the canonization of potential saints. Tiziana Fabi/AFP/Getty Images hide caption

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Tapestry portraits of Pope John Paul II (left) and Pope John XXIII hang from balconies on the facade of St. Peter's Basilica in Rome. On Sunday, the two pontiffs will officially be declared saints. Claudio Peri/EPA/Landov hide caption

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