Soft-spoken Prevost, born in Chicago, is first pope from the United States
Cardinal Robert Francis Prevost became the first pope from the United States on Thursday, picking the papal name Leo XIV after cardinals from around the world elected him leader of the world's 1.4 billion Catholics.
Tens of thousands of people packed in St Peter's Square cheered as Prevost appeared on the balcony of St Peter's Basilica, waving with both hands, smiling and bowing.
"Peace by with you," he told the crowds.
White smoke from the Sistine Chapel had billowed into the sky on the cardinals' second day of voting to announce his election in a secret conclave, while the bells of St Peter's Basilica and churches across Rome rang out.
Crowds of people rushed towards the square to watch the balcony of the basilica, which has been fitted out with red curtains for the first address to the world by the 267th pope.
The new pontiff, who succeeds Argentine reformer Pope Francis, was introduced in Latin with his chosen papal name.
Pope Leo XIV greeted the city of Rome and the world with these words at his first appearance as the Successor of Peter from the Central Loggia of St Peter's Basilica:
[In Italian]
Peace be with you! Dearest brothers and sisters, this was the first greeting of the risen Christ, the good shepherd who gave His life for the flock of God. I, too, would like this greeting of peace to enter your hearts, to reach your families and all people, wherever they are; and all the peoples, and all the earth: Peace be with you.
This is the peace of the Risen Christ, a disarming and humble and preserving peace. It comes from God.
God, who loves all of us, without any limits or conditions. Let us keep in our ears the weak but always brave voice of Pope Francis, who blessed Rome — the Pope who blessed Rome and the world that day on the morning of Easter.
Allow me to continue that same blessing.
God loves us, all of us, evil will not prevail. We are all in the hands of God. Without fear, united, hand in hand with God and among ourselves, we will go forward.
We are disciples of Christ, Christ goes before us, and the world needs His light.
Humanity needs Him like a bridge to reach God and His love. You help us to build bridges with dialogue and encounter so we can all be one people always in peace.
Thank you Pope Francis!
Thank you to my Cardinal brothers who chose me to be the Successor of Peter and to walk together with you as a united Church searching all together for peace and justice, working together as women and men, faithful to Jesus Christ without fear, proclaiming Christ, to be missionaries, faithful to the gospel.
I am a son of Saint Augustine, an Augustinian. He said, “With you I am a Christian, for you a bishop."
So may we all walk together towards that homeland that God has prepared for us.
To the Church of Rome, a special greeting:
We have to look together how to be a missionary Church, building bridges, dialogue, always open to receiving with open arms for everyone, like this square, open to all, to all who need our charity, our presence, dialogue, love.
[In Spanish]:
Hello to all and especially to those of my diocese of Chiclayo in Peru, a loyal, faithful people accompanying the bishop and helping the bishop.
[Returning to Italian]:
To all you brothers and sisters of Rome, Italy, of all the world, we want to be a synodal church, walking and always seeking peace, charity, closeness, especially to those who are suffering.
Today is the day of the Supplicatio [Plea] to Our Lady of Pompei.
Our blessed mother Mary always wants to walk with us, be close to us, she always wants to help us with her intercession and her love. So let us pray together for this mission, and for all of the Church, and for peace in the world.
We ask for this special grace from Mary, our Mother.
Hail Mary... [accompanied by the crowds in St Peter's Square and around the world.]
Excitement
"It's an amazing feeling," said an elated Joseph Brian, a 39-year-old chef from Belfast in Northern Ireland, who came with his mother to Rome for the spectacle.
"I'm not an overly religious person but, being here with all these people just blew me away," he told AFP as people around him jumped up and down in excitement.
There were euphoric scenes as one priest sat on someone's shoulders waving a Brazilian flag and another lifted a heavy crucifix into the air in jubilation.
"Habemus papam, woooo!" howled Bruna Hodara, 41, from Brazil, echoing the words to be spoken on the balcony as the new pope is introduced.
She, like others, recorded the historic moment on her phone, as others waved flags and cried out "Viva Il Papa!" - "Long live the pope!" in Italian.
"It's a once in a lifetime opportunity to be here to see the pope. It's really special... I'm excited!" said Florian Fried, a 15-year-old from Munich, in Germany.
Pope Francis died last month aged 88 after a 12-year papacy during which he sought to forge a more compassionate Church - but drew anger from many conservatives with his progressive approach.
The new pope now faces a momentous task: as well as asserting his moral voice on a conflict-torn global stage, he must try to unite a divided Church and tackle burning issues such as the the continued fall-out from the sexual abuse scandal.
Some 133 "Princes of the Church" from five continents - the largest and most international conclave ever - began voting on Wednesday afternoon.
Sworn to secrecy, on pain of excommunication, their only means of communicating their progress to the outside world was by sending up smoke through the chimney of the Sistine Chapel.
On Wednesday evening and then again on Thursday lunchtime, the smoke was black, eliciting disappointed sighs from the tens of thousands watching.
But on Thursday afternoon just after 6:00 pm (1600 GMT) the smoke emitted was white, confirming that the Catholic Church has a new spiritual leader.
It was unknown how many ballots it took to elect the new pope, but it followed recent history in wrapping up in less than two days.
In 2005, Benedict XVI, a German theologian, was elected in four ballots and Francis, in 2013, was elected in five ballots.
While the details of the election will forever remain secret, the new pope had to secure at least two-thirds of votes to be elected.
By tradition, he now enters the Room of Tears - where freshly-elected popes give free rein to their emotions - to don a papal cassock for the first time, before returning to the Sistine Chapel so the cardinals can pledge their obedience.
He will then appear on the balcony along with a senior cardinal, who will announce to the waiting crowds "Habemus Papam" ("We have a pope").
The pope will then give a short speech and impart his first "Urbi et Orbi" ("To the City and the World") blessing.
The election has come at a time of great geopolitical uncertainty, which was seen as a key voting issue, along with the rifts within the Church.
Francis was a compassionate reformer who prioritised migrants and the environment, but he angered traditionalists who wanted a defender of doctrine rather than a headline-maker.
Some 80 percent of the cardinal electors were appointed by Francis. Hailing from 70 countries around the world, it was the most international conclave ever.
That was no guarantee, however, that the cardinals would pick someone in his vein.
The question was whether to choose a pastor or diplomat, a liberal or conservative, someone versed in the Curia - the Church's governing body - or a relative outsider from areas of the world where Catholic faith is thriving.
Before the cardinals were locked into the Sistine Chapel Wednesday, their dean Giovanni Battista Re urged them to choose someone able to protect the Church's unity.
The next pope must also be able to lead "at this difficult and complex turning point in history", amid raging conflicts around the world and the rise of ultra-nationalist parties.
The Church has also had difficulty in adapting to the modern world, with declining priest numbers and increasingly empty pews in the West.
The papal inauguration usually takes place less than a week after the election with a mass celebrated before political and religious leaders from around the world.
The new pope will likely do a tour of St Peter's Square in his popemobile for the first time, before delivering a homily outlining his priorities.
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