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Ariel Schalit, Associated Press
Greek Orthodox priests hold palm fond in the Church of the Holy Sepulcher, traditionally believed by many to be the site of the crucifixion and burial of Jesus Christ during Orthodox Palm Sunday, in Jerusalem, Sunday, April 5, 2015. Christians in the Holy Land and across the world are celebrating Easter, commemorating the day followers believe Jesus was resurrected in Jerusalem 2,000 years ago.

Christians in the Holy Land and across the world are celebrating Easter, commemorating the day followers believe Jesus was resurrected in Jerusalem 2,000 years ago.

The cavernous Holy Sepulcher church in Jerusalem was packed with worshippers on Sunday. The site is where Christians believe Jesus was crucified, buried and resurrected.

Later in the day, a Mass was celebrated in Bethlehem's Nativity Church, built atop the site where Christians believe Jesus was born.

Catholics and others are celebrating Easter, whereas Orthodox Christians, who follow a different calendar, are marking Palm Sunday with processions.

At the Vatican, Pope Francis delivered the traditional Urbi et Orbi (to the city and to the world) blessing at the end of Easter Sunday Mass in St. Peter's Square — a sort of papal commentary on the state of the world's affairs.

Francis praised the framework nuclear agreement with Iran as an opportunity to make the world safer, while expressing deep concern about the bloodshed in Libya, Yemen, Syria, Iraq, Nigeria and elsewhere.

In Kenya, worshippers celebrated at the Our Lady of Consolation Church in Garissa — the same town where Islamic militants killed 148 people in an attack on Garissa University College on Thursday. According to witnesses and survivors, the gunmen singled out Christians to be killed.

Here is a gallery of Easter Sunday images from around the world.

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