“During the prayer, I was at the Chopin airport in Warsaw, and there were so many people that they were pouring out of the chapel,” Father Rytel-Andrianik said. “This was an initiative started by lay people, which makes it even more extraordinary. Millions of people prayed the rosary together. This exceeded the boldest expectations of the organizers.”

More than 90 percent of Poland’s 38 million citizens are Roman Catholic.

Marek Jedraszewski, the archbishop of Krakow in southern Poland, said during his sermon on Saturday morning that people should pray for “Europe to remain Europe.”

“Let’s pray for other nations of Europe and the world to understand that we need to return to the Christian roots of European culture if we want Europe to remain Europe,” Archbishop Jedraszewski said.