Nuns of the Ukrainian Orthodox Church of the Moscow Patriarchate take part in a ceremony marking the 1031st anniversary of the Christianisation of the country, which was then known as 'Kievan Rus', in Kiev, Ukraine July 27, 2019. REUTERS/Gleb Garanich 

A nun from the order of Missionaries of Charity holds a rosary during the annual procession of Our Lady of Charity, the patron saint of Cuba, on the streets of downtown Havana, Cuba, September 8, 2018. REUTERS/Alexandre Meneghini 

Nuns look toward the north standing between binoculars near the demilitarized zone in Paju, South Korea, June 12, 2018. REUTERS/Kim Hong-Ji 

A nun walks on a snow-covered path near the Sacre Coeur basilica at the Butte Montmartre in the early morning in Paris as winter weather bringing snow and freezing temperatures arrive in France, France, February 9, 2018. REUTERS/Philippe Wojazer 

A sister, member of the Clarisses community, walks in the garden of Saint Clare Monastery in Nantes, France September 7, 2017. Picture taken September 7, 2017. REUTERS/Stephane Mahe TPX IMAGES OF THE DAY 

California "weed nun" Christine Meeusen, 57, who goes by the name Sister Kate (R), adjusts the habit of India Delgado, who goes by the name Sister Eevee, at Sisters of the Valley near Merced, California, U.S., April 18, 2017. Picture taken April 18, 2017. REUTERS/Lucy Nicholson 

Costumed performers walk to the stage for a dress rehearsal of Giacomo Puccini's Tosca ahead of the Israeli Opera Festival at Masada, which begins Thursday, June 1, 2015. According to the ancient historian Josephus, Masada was the site of a Roman siege that ended in 73 AD when hundreds of Jewish rebels committed mass suicide rather than fall as slaves to the Romans. Built by King Herod as a winter palace between 37-31 BC, Masada is a UNESCO World Heritage site and has for decades been a source of archaeological fascination. Picture taken June 1, 2015. REUTERS/Nir Elias

Catholic nuns walk to a polling station to cast their ballots during municipal elections in Ronda, southern Spain May 24, 2015. Upstart parties are expected to make strong headway in Spanish regional elections on Sunday, ushering in an era of coalition and compromise and potentially dampening Prime Minister Mariano Rajoy's prospects of winning a second term later this year. REUTERS/Jon Nazca 

Members of the religious communities celebrate Good Friday as they carry a cross through central Durban, April 3, 2015. REUTERS/Rogan Ward TPX IMAGES OF THE DAY

Pope Francis is greeted by cloistered nuns at the Duomo during his pastoral visit in Naples March 21, 2015. REUTERS/Stefano Rellandini 

Pope Francis reacts as he is greeted by cloistered nuns at the Duomo during his pastoral visit in Naples March 21, 2015 REUTERS/Stefano Rellandini TPX IMAGES OF THE DAY

Orthodox nuns watch firefighters work to extinguish a fire at the bell tower of Novodevichy monastery, a UNESCO World Heritage site, in Moscow March 15, 2015. REUTERS/Tatyana Makeyeva (RUSSIA - Tags: DISASTER RELIGION TRAVEL TPX IMAGES OF THE DAY) 

A huge poster shows a model wearing jeans and part of a nun's habit, on a building in Naples March 11, 2015. Rosso di Sera, an Italian ready-to-wear clothing chain, has caused a stir by putting up the huge publicity poster of a semi-nude woman dressed as a nun in Naples less than two weeks before Pope Francis is due to visit the southern port city. REUTERS/Ciro De Luca (ITALY - Tags: BUSINESS SOCIETY RELIGION) 

A huge poster shows a model wearing jeans and part of a nun's habit, on a building in Naples March 11, 2015. Rosso di Sera, an Italian ready-to-wear clothing chain, has caused a stir by putting up the huge publicity poster of a semi-nude woman dressed as a nun in Naples less than two weeks before Pope Francis is due to visit the southern port city. REUTERS/Ciro De Luca (ITALY - Tags: BUSINESS SOCIETY RELIGION) 

A huge poster shows a model wearing jeans and part of a nun's habit, on a building in Naples March 11, 2015. Rosso di Sera, an Italian ready-to-wear clothing chain, has caused a stir by putting up the huge publicity poster of a semi-nude woman dressed as a nun in Naples less than two weeks before Pope Francis is due to visit the southern port city. REUTERS/Ciro De Luca (ITALY - Tags: BUSINESS SOCIETY RELIGION) 

A nun walks at the Alfama neighborhood in Lisbon August 19, 2014. REUTERS/Rafael Marchante (PORTUGAL - Tags: SOCIETY TPX IMAGES OF THE DAY) 

Nuns greet Pope Francis as he arrives for a closing Holy Mass of the 6th Asian Youth Day in Haemi Castle in Haemi August 17, 2014. REUTERS/Kim Hong-Ji (SOUTH KOREA - Tags: RELIGION POLITICS SOCIETY TPX IMAGES OF THE DAY) 

Nuns from the enclosed monastery of Imaculada Conceicao celebrate a goal while watching a broadcast of the 2014 World Cup quarter-final soccer match between Brazil and Colombia in Piratininga, in the state of Sao Paulo, July 4, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: SPORT SOCCER WORLD CUP SOCIETY RELIGION)

Nuns from the enclosed monastery of Imaculada Conceicao celebrate Brazil's victory as they watch on television at the end of the 2014 World Cup quarter-final soccer match between Brazil and Colombia in Piratininga, in Sao Paulo state, July 4, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: SPORT SOCCER WORLD CUP SOCIETY RELIGION)

A man wearing a nun's habit cycles through the streets of Kensington during the eighth annual Kinetic Sculpture Derby in Philadelphia, Pennsylvania May 17, 2014. Kinetic sculpture competitions, in which people dressed in eccentric costumes ride custom-made human-powered vehicles, were founded in 1969 by a Californian artist named Hobart Brown, and now take place across the globe, according to event organizers. REUTERS/Charles Mostoller (UNITED STATES - Tags: SOCIETY TRANSPORT) 

A nun walks her dog past Haitian immigrants at the Nossa Senhora da Paz Catholic church, where the immigrants are staying in a shelter, in the Glicerio neighborhood of Sao Paulo April 28, 2014. Two years ago, the Brazil government announced the creation of a humanitarian visa that would be exclusively issued to Haitian refugees after the devastating 2010 earthquake on the island. Around 800 Haitians immigrants have arrived in the last two weeks in Sao Paulo looking for work from the northern state of Acre. Picture taken April 28, 2014. REUTERS/Nacho Doce (BRAZIL - Tags: POLITICS SOCIETY IMMIGRATION BUSINESS EMPLOYMENT RELIGION) 

A nun prays as workers set up a tapestry featuring Pope John Paul II in St. Peter's square at the Vatican April 25, 2014. Pope Francis will canonize on April 27 the late Pope John Paul II, who reigned from 1978 to 2005, and Pope John XXIII, who was pontiff from 1958 to 1963 and called the Second Vatican Council, a landmark meeting that modernised the Church. REUTERS/Stefano Rellandini (VATICAN - Tags: RELIGION TPX IMAGES OF THE DAY) 

Five nuns pray after the conclusion of Easter Mass at the Cathedral of the Holy Cross in Boston, Massachusetts April 20, 2014. REUTERS/Brian Snyder (UNITED STATES - Tags: RELIGION TPX IMAGES OF THE DAY) 

Two women wearing nun outfits drink beer while watching the playoff draw between Quebec and Manitoba at the 2014 Tim Hortons Brier curling championships in Kamloops, British Columbia March 8, 2014. REUTERS/Ben Nelms (CANADA - Tags: SPORT CURLING SOCIETY TPX IMAGES OF THE DAY) 

A nun marks a cross on the forehead of a devotee during the commemoration of Ash Wednesday outside a Roman Catholic church in Paranaque, Metro Manila March 5, 2014. Catholics in the country celebrated Ash Wednesday, which serves as a reminder that "as a man is dust, so unto dust he shall return" and marked the beginning of a 40-day period of Lent in the Roman Catholic calendar where many devotees in the Philippines will start the season of fasting and prayers. REUTERS/Erik De Castro (PHILIPPINES - Tags: RELIGION SOCIETY) 

A nun walks inside the Church of the Nativity, the site revered as the birthplace of Jesus, ahead of Christmas in the West Bank town of Bethlehem December 23, 2013. REUTERS/Ammar Awad (WEST BANK - Tags: RELIGION SOCIETY) 

A nun looks on as Pope Francis leads a mass in Saint Peter's Square at the Vatican October 13, 2013. REUTERS/Max Rossi (VATICAN - Tags: RELIGION) 

A nun takes pictures as believers mark 1,700 years since the Edict of Milan, when Roman emperor Constantine issued instructions to end the persecution of Christians, in the southern Serbian city of Nis October 6, 2013. Nis, some 220 km (137 miles) south of Belgrade, is the birthplace of Constantine the Great, the first Roman emperor to convert to Christianity. The Edict of Milan, which he had a part in enacting, proclaimed official tolerance of Christianity across the Empire. REUTERS/Marko Djurica (SERBIA - Tags: RELIGION SOCIETY ANNIVERSARY TPX IMAGES OF THE DAY) 

Nuns looks at Pope Francis leaving the Archbishop's residence after his meeting with the underprivileged during a pastoral visit in Assisi October 4, 2013. Pope Francis visited Assisi, the Italian town that is home to his namesake St. Francis of Assisi. Pope Francis took his name from the saint who is revered around the world as a symbol of austerity, simplicity, concern for the poor and a love of the environment. REUTERS/Alessandra Tarantino/Pool (ITALY - Tags: RELIGION TPX IMAGES OF THE DAY) 

A nun looks through binoculars as Pope Francis arrives to holds a mass next to San Francesco Basilica in Assisi October 4, 2013. Pope Francis visits Assisi, the Italian town that was home to his namesake St. Francis of Assisi. Pope Francis took his name from the saint who is revered around the world as a symbol of austerity, simplicity, concern for the poor and a love of the environment. REUTERS/Stefano Rellandini (ITALY - Tags: RELIGION) 

Nuns sit at a fast food restaurant in downtown Guatemala City August 28, 2013.
REUTERS/Jorge Dan Lopez (GUATEMALA - Tags: SOCIETY RELIGION) 

Catholic nuns attend mass at the Jesuit Apostolic Center in Seoul August 26, 2013. Hundreds of Catholic nuns and monks from convents across the country gathered in Seoul on Monday to attend mass together as they demand an apology from South Korean President Park Geun-Hye, to take responsibility for a spy agency scandal, and a reform of the national spy agency. Local media reported that the National Intelligence Service (NIS) conducted an online smear campaign to sway public opinion in favor of then ruling Saenuri party candidate Park before last December's presidential election. REUTERS/Lee Jae-Won (SOUTH KOREA - Tags: POLITICS RELIGION CIVIL UNREST) 

Orthodox nuns hold candles during a procession in Jerusalem's Old City early morning August 25, 2013. Christian worshippers took part in the annual procession in which an icon of the Virgin Mary is carried from the Church of the Holy Sepulchre in Jerusalem's Old City to a church at the foot of the Mount of Olives, where Christians believe the tomb of the Virgin Mary is located. REUTERS/Darren Whiteside (JERUSALEM - Tags: RELIGION TPX IMAGES OF THE DAY) 

A nun takes pictures of bathers before the arrival of Pope Francis on Copacabana beach in Rio de Janeiro, July 26, 2013. Pope Francis on Thursday issued the first social manifesto of his young pontificate, telling slum dwellers in Brazil that the world's rich must do much more to wipe out vast inequalities between the haves and the have-nots. REUTERS/Ricardo Moraes (BRAZIL - Tags: RELIGION) 

Nuns and sunbathers wait for the arrival of Pope Francis on Copacabana beach in Rio de Janeiro, July 26, 2013. Pope Francis on Thursday issued the first social manifesto of his young pontificate, telling slum dwellers in Brazil that the world's rich must do much more to wipe out vast inequalities between the haves and the have-nots. REUTERS/Ricardo Moraes (BRAZIL - Tags: RELIGION) 

A young nun plays on a seesaw as she awaits the arrival of Pope Francis outside the Sao Joaquim Palace in Rio de Janeiro, July 26, 2013. Pope Francis on Thursday issued the first social manifesto of his young pontificate, telling slum dwellers in Brazil that the world's rich must do much more to wipe out vast inequalities between the haves and the have-nots. REUTERS/Pilar Olivares (BRAZIL - Tags: RELIGION) 

Nuns pray inside the Basilica of Our Lady of Aparecida, Brazil's patron saint, in the city of Aparecida do Norte, 165 km (103 miles) east of Sao Paulo July 23, 2013. Pope Francis will visit the basilica on July 24. REUTERS/Nacho Doce (BRAZIL - Tags: RELIGION SOCIETY) 

A nun takes a picture as Pope Francis leads a Corpus Christi mass at San Giovanni in Laterano Basilica in Rome, May 30, 2013. REUTERS/Giampiero Sposito (ITALY - Tags: RELIGION) 

Lidiane Pereira (R) reacts after she receives her habit upon reaching the level of "aspirant" within Franciscan fraternity O Caminho, during a mass at the group's house in the Campo Grande neighbourhood of Rio de Janeiro April 8, 2013. O Caminho (The Way) are a group of Franciscan monks and nuns who help the homeless on the streets of Rio de Janeiro. They consider the election of Pope Francis, the first pontiff to take the name of St Francis of Assisi, to be a confirmation of their beliefs in poverty and simplicity. In July, Pope Francis will visit Rio de Janeiro in his first international trip since assuming the papacy. Picture taken April 8, 2013. REUTERS/Ricardo Moraes (BRAZIL - Tags: SOCIETY POVERTY RELIGION)

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Members of Franciscan fraternity, O Caminho, (L-R) Renata Florencio, Palloma Barradas, and Juliana Santos, receive their habits upon reaching the level of "aspirant", during a mass at at the group's house in the Campo Grande neighbourhood of Rio de Janeiro, April 8, 2013. O Caminho (The Way) are a group of Franciscan monks and nuns who help the homeless on the streets of Rio de Janeiro. They consider the election of Pope Francis, the first pontiff to take the name of St Francis of Assisi, to be a confirmation of their beliefs in poverty and simplicity. In July, Pope Francis will visit Rio de Janeiro in his first international trip since assuming the papacy. Picture taken April 8, 2013. REUTERS/Ricardo Moraes (BRAZIL - Tags: SOCIETY POVERTY RELIGION)

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A nun takes a picture with a tablet as she waits for the start of a canonization mass led by Pope Francis in Saint Peter's Square at the Vatican May 12, 2013. The Pope leads a mass on Sunday for Antonio Primaldo, mother Laura Montoya and Maria Guadalupe Garcia Zavala. REUTERS/Stefano Rellandini (VATICAN - Tags: RELIGION) 

An Orthodox Christian nun receives blessing from a priest during a prayer session on Great Thursday of Jesus Christ, as part of the holy Easter service in the 10th century monastery of St. John the Baptist "Sv. Jovan Bigorski", near Mavrovo, 130 km (81 miles) west of Macedonia's capital Skopje, May 2, 2013. Picture taken May 2, 2013. REUTERS/Ognen Teofilovski (MACEDONIA - Tags: RELIGION SOCIETY) 

A nun prays with a rosary as Pope Francis leads the Holy Rosary at the Saint Mary Major Basilica in Rome, May 4, 2013. REUTERS/Tony Gentile (ITALY - Tags: RELIGION) 

Orthodox nuns attend Palm Sunday mass in the Church of the Holy Sepulchre in Jerusalem's Old City April 28, 2013. REUTERS/Baz Ratner (JERUSALEM - Tags: RELIGION) 

Catholic nuns pray at the Washing of the Feet ceremony in the Church of the Holy Sepulchre in Jerusalem's Old City during Holy Week March 28, 2013. Holy Week is celebrated in many Christian traditions during the week before Easter. REUTERS/Ammar Awad (JERUSALEM - Tags: RELIGION) 

Catholic nuns pray at the Washing of the Feet ceremony in the Church of the Holy Sepulchre in Jerusalem's Old City during Holy Week March 28, 2013. Holy Week is celebrated in many Christian traditions during the week before Easter. REUTERS/Ammar Awad (JERUSALEM - Tags: RELIGION) 

A nun looks on during the Palm Sunday mass led by Pope Francis at Saint Peter's Square at the Vatican March 24, 2013. REUTERS/Max Rossi (VATICAN - Tags: RELIGION) 

A nun holds a candle as she takes part in a march ahead of the 33rd anniversary of assassination of the late Archbishop Oscar Arnulfo Romero in San Salvador March 16, 2013. Romero was murdered by a right-wing hit squad while preparing for mass at the Divina Providencia Cancer Hospital in San Salvador on March 24, 1980. REUTERS/Ulises Rodriguez (EL SALVADOR - Tags: POLITICS CRIME LAW RELIGION) 

A nun prays in Saint Peter's Square, a day after the election of Pope Francis, Cardinal Jorge Mario Bergoglio of Argentina, at the Vatican March 14, 2013. Pope Francis, barely 12 hours after his election, quietly left the Vatican early on Thursday to pray for guidance at a Rome basilica as he looks to usher a Catholic Church mired in intrigue and scandal into a new age of simplicity and humility. REUTERS/Christian Hartmann (VATICAN - Tags: RELIGION TPX IMAGES OF THE DAY) 

A nun takes a photograph of the first batch of souvenirs adorned with freshly-printed pictures of the newly-elected Pope Francis in a shop at the Vatican March 14, 2013. Pope Francis, barely 12 hours after his election, quietly left the Vatican early on Thursday to pray for guidance as he looks to usher a Roman Catholic Church mired in intrigue and scandal into a new age of simplicity and humility. REUTERS/Eric Gaillard (VATICAN - Tags: RELIGION BUSINESS)

Nuns hold umbrellas in Saint Peter's Square while waiting for smoke to rise from a chimney on top of the Sistine Chapel during the second day of voting for the election of a new pope, at the Vatican March 13, 2013. Roman Catholic Cardinals started a conclave on Tuesday to elect a successor to Pope Benedict, who abdicated last month. REUTERS/Alessandro Bianchi (VATICAN - Tags: RELIGION) 

Roman Catholic nuns pray during a mass at Sao Paulo Cathedral March 12, 2013. Roman Catholic cardinals began their conclave inside the Vatican's Sistine Chapel today to elect a new pope. REUTERS/Nacho Doce (BRAZIL - Tags: RELIGION) 

A Roman Catholic nun prays at the Metropolitan Cathedral in Buenos Aires March 12, 2013. Far back on the main doors a group of left-wing activists carried out a protest over the education policy of Buenos Aires' city Mayor Mauricio Macri and warned they will not leave the church until the municipal government answers their demands. REUTERS/Enrique Marcarian (ARGENTINA - Tags: POLITICS RELIGION CIVIL UNREST) 

Nuns walk arm in arm on a crossing near Saint Peter's square at the Vatican March 11, 2013. Roman Catholic Cardinals will begin their conclave inside the Vatican's Sistine Chapel on Tuesday to elect a new pope. REUTERS/Kevin Coombs (VATICAN - Tags: RELIGION) 

A nun sits at a colonnade in St Peter's Square at the Vatican March 11, 2013. Roman Catholic Cardinals will begin their conclave inside the Vatican's Sistine Chapel on Tuesday to elect a new pope. REUTERS/Christian Hartmann (VATICAN - Tags: RELIGION) 

Nuns pray during a Roman Catholic service for Pope Benedict XVI at Berlin's St Hedwigs Cathedral February 28, 2013. Pope Benedict left the Vatican on Thursday after pledging unconditional obedience to whoever succeeds him to guide the Roman Catholic Church at one of the most crisis-ridden periods in its 2,000-year history. REUTERS/Markus Schreiber/Pool (GERMANY - Tags: POLITICS RELIGION TPX IMAGES OF THE DAY) 

Orthodox Christian nuns sit during a ceremony at the baptismal site known as Qasr el-Yahud on the banks of the Jordan River near the West Bank city of Jericho January 18, 2013. Over a thousand Orthodox Christians flocked to the Jordan River to celebrate the feast of the Epiphany at the traditional site where it is believed John the Baptist baptised Jesus. REUTERS/Baz Ratner (WEST BANK - Tags: RELIGION) 

A Orthodox nun hand-embroiders Swarovski crystals onto a miter at Saint George the Victorious church in Rajcica monastery, near the city of Debar 180 km (111 miles) west of Macedonia's capital Skopje December 25, 2012. A sisterhood of eleven Orthodox nuns makes handmade headdresses called "miters" for Archbishops all over the world. Picture taken December 25, 2012. REUTERS/Ognen Teofilovski (MACEDONIA - Tags: SOCIETY RELIGION) 

A nun walks next to a woman asking for money in Rome, December 10, 2012. The sudden acceleration in the political crisis over the weekend was enough to put Italy back into the spotlight of the euro zone crisis alongside Spain, whose yields also climbed on Monday on the back of the turmoil in Rome. REUTERS/Max Rossi (ITALY - Tags: POLITICS ELECTIONS BUSINESS) 

Children pray during a religious lesson in a public elementary school in Warsaw October 4, 2012. Society in Poland is changing and with it, the relationship between the Polish people and the Catholic church. In this country where, since the end of Communist rule, prime ministers have sought the blessing of the church before making important decisions, Catholicism is losing its influence. Opinion polls show that the number of people who go to church or pray regularly is in decline. And now a series of initiatives - on in-vitro fertilisation (IVF), ending state subsidies for the church, and homosexuality - is challenging Catholicism's role at the heart of the state. Picture taken October 4, 2012. To match story POLAND-CHURCH/ REUTERS/Kacper Pempel (POLAND - Tags: RELIGION EDUCATION)