Photos : Pope Francis Declares John Paul II, John XXIII saints

Pope Francis declared two of his predecessors, Popes John XXIII and John Paul II, saints in a historic mass on Sunday, April 27th 2014.

 The current pope presided over a mass in front of 500,000 people who gathered in St. Peter's Square and surrounding streets at the Vatican, including the recently retired Pope Benedict XVI, according to the Associated Press. This is the first time a reigning pope and a retired one celebrated mass together, and the first time two popes were canonized at the same time.

During the official proclamation at about 10.15am today, Pope Francis paid tribute to "two men of courage" who he said had "co-operated with the Holy Spirit in renewing and updating the church". He said:

"We declare and define Blessed John XXIII and John Paul II to be saints and we enrol them among the saints, decreeing that they are to be venerated as such by the whole church. They were priests, bishops and popes of the 20th century. They lived through the tragic events of that century, but they were not overwhelmed by them.

John XXIII, he said, was a pastor to the church, "a servant leader" who had called the Second Vatican Council. John Paul II, meanwhile, was "the pope of the family".

Pope Francis said he hoped the two new saints would intercede with God "so that … [the church] may be open to the Holy Spirit in pastoral service to the family".

Carrying flags, backpacks and rolled foam mattresses, over 500,000 pilgrims from all over the world had flocked into Vatican City overnight to attend the unprecedented double-canonisation mass in St Peter's Square.