Pope Francis addresses the crowd before delivering his Urbi et Orbi message from the main balcony of St. Peter's Basilica at the Vatican on April 16. Across the world Christians are celebrating Easter, commemorating the day followers believe Jesus was resurrected from the dead more than 2,000 years ago. L'Osservatore Romano/AP

A Bosnian Croat woman prays during Easter service in the Catholic church in the Bosnian capital of Sarajevo on Sunday, April 16. Amel Emric/AP

Christian pilgrims in Jerusalem light candles April 16 during the Easter Sunday procession at the Church of the Holy Sepulchre, traditionally believed by many Christians to be the site of the crucifixion and burial of Jesus. Sebastian Scheiner/AP

Indian Christians participate in Easter Sunday rituals at a church in Guwahati, India. Anupam Nath/AP

The Latin Patriarch of Jerusalem, Pierbattista Pizzaballa, walks with Christian clergymen holding candles during an Easter Sunday procession at the Church of the Holy Sepulchre in Jerusalem. Sebastian Scheiner/AP

A Syriac Christian militiaman stands guard during an Easter ceremony at Saint John's Church in Qaraqosh, the predominantly Christian city in Iraq that was recently liberated from ISIS. CHRISTOPHE SIMON/AFP/Getty Images

Penitents from a Catholic Church burn incense during a procession through the streets of Antigua, Guatemala, on Friday, April 14. Christians around the world are observing Holy Week, which marks the last week of Lent and the beginning of Easter celebrations. Moises Castillo/AP

A Haitian woman prays and balances a stone on her head as a form of penance during an annual pilgrimage up the Calcaire Miracle mountain on Good Friday. Dieu Nalio Chery/AP

Pope Francis lies down in prayer during the Good Friday Passion of Christ Mass inside St. Peter's Basilica at the Vatican. Gregorio Borgia/AP

Christ's crucifixion is re-enacted in San Fernando, Philippines, on April 14. Dondi Tawatao/Getty Images

Cardinal John Njue, head of the Catholic Church in Kenya, carries a cross through the streets of Nairobi on April 14. Sayyid Abdul Azim/AP

Hooded penitents from the Las Angustias brotherhood take part in a Holy Week procession in Cordoba, Spain, on Thursday, April 13. Manu Fernandez/AP

People re-enact the baptism of Jesus during Holy Week celebrations in Lima, Peru, on April 13. Martin Mejia/AP

Russian Orthodox Patriarch Kirill holds a service on April 13. Sergey Pyatakov/Sputnik/AP

Pope Francis washes the feet of some inmates of the Paliano detention center, south of Rome, on April 13. L'Osservatore Romano/AP

Masked penitents in Calahorra, Spain, take part in the procession of the Santa Veracruz brotherhood on Wednesday, April 12. Alvaro Barrientos/AP

Catholic priests hold palm branches at the Church of the Holy Sepulchre in Jerusalem on Sunday, April 9. GALI TIBBON/AFP/Getty Images

Ethiopians pray during a Palm Sunday Mass inside the St. Samaan Church overlooking Cairo. Nariman El-Mofty/AP

Children take part in a Holy Week procession in Cordoba, Spain, on April 9. Manu Fernandez/AP

A donkey rests his head on a man's shoulder during a Palm Sunday procession in Pamplona, Spain. Alvaro Barrientos/AP

A priest holds up a palm in Pamplona on April 9. Alvaro Barrientos/AP

Faithful fill St. Peter's Square as Pope Francis celebrates a Palm Sunday Mass at the Vatican. Alessandra Tarantino/AP

Pope Francis waves to the crowd at the Palm Sunday Mass. Alessandra Tarantino/AP

Musicians, right, walk to a church before a Holy Week procession in Cordoba, Spain, on April 9. Manu Fernandez/AP