A record six million people poured into Manila's rain-soaked streets and its biggest park as Pope Francis ended his Asian pilgrimage with an appeal for Filipinos to protect their young from sin and vice so they can instead become missionaries of the faith.
The crowd estimate included people who attended the Pope's final Mass in Rizal Park and surrounding areas, and lined his motorcade route, said the chairman of the Metropolitan Manila Development Authority, Francis Tolentino.
Vatican spokesman the Rev Federico Lombardi said the Vatican had received the figure officially from local authorities and that it was a record, surpassing the five million who turned out for St John Paul II's final Mass in the same park in 1995.
Francis marked an important feast day honouring the infant Jesus by dedicating the final homily of his week-long Asian trip, which began in Sri Lanka, to children. It was a reflection of the importance that the Vatican places on Asia as the future of the church since it is one of the few places where Catholic numbers are growing - and on the Philippines as the largest Catholic nation in the region.
"We need to see each child as a gift to be welcomed, cherished and protected," Francis said in his homily. "And we need to care for our young people, not allowing them to be robbed of hope and condemned to a life on the streets."
Francis made a triumphant entry into Rizal Park in his popemobile, wearing the same cheap, plastic yellow rain poncho handed out to the masses during his visit to the typhoon-hit eastern city of Tacloban a day earlier.
The crowd - a sea of humanity in colourful rain ponchos spread out across 148 acres of parkland and boulevards surrounding it - erupted in shrieks of joy when he drove by, a reflection of the incredible resonance Francis's message about caring for society's youngest and most marginal has had in a country where about a quarter of its 100 million people lives in poverty.
Francis has dedicated his four-day trip to the Philippines to the poor and marginal. He denounced the corruption that has robbed them of a dignified life, visited with street children and travelled to Tacloban to offer prayers for survivors of the deadly 2013 Typhoon Haiyan, which devastated one of the Philippines' poorest regions.
Earlier today, Francis drew a huge crowd to Manila's Catholic university, where he came close to tears himself hearing two rescued street children speak of their lives growing up poor and abandoned.
The Pope ditched his prepared remarks and spoke off the cuff in his native Spanish to respond to 12-year-old Glyzelle Palomar, who wept as she asked Francis why children suffer so much.
Palomar, a former street child rescued by a church-run foundation, told him of children who are abandoned or neglected by their parents and end up on the streets using drugs or in prostitution.
"Why is God allowing something like this to happen, even to innocent children?" Palomar said through tears. "And why are there so few who are helping us?"
A visibly moved Francis said he had no answer. "Only when we are able to cry are we able to come close to responding to your question," he said.
"Those on the margins cry. Those who have fallen by the wayside cry. Those who are discarded cry," he said. "But those who are living a life that is more or less without need, we don't know how to cry."
And he added: "There are some realities that you can only see through eyes that have been cleansed by tears."
A steady rain from the same tropical storm that forced Francis to cut short his visit to Tacloban yesterday fell on the crowd, but it did not seem to dampen spirits of Filipinos who streamed into the capital for Francis's final day.
In his homily, Francis urged the crowd to protect their children from sin, alcohol and gambling, saying the devil "distracts us with the promise of ephemeral pleasures, superficial pastimes".
"Filipinos are called to be outstanding missionaries of the faith in Asia," he said.
Emmie Toreras, 38, who was wearing a rubbish bag to guard against the rain, said she had slept in the park since Friday to ensure a view of the Pope.
"It was a blessing that we saw him. Even if we were soaked by the rain, we feel fine," she said.
"He loves the poor and people like us," said Ms Toreras, whose husband, a rags vendor, stayed at home to work.