ROME (AP) — Pope Leo XIV on Sunday told more than a million Catholic youths at a closing Mass for a weeklong encounter with the next generation of faithful that they are “the sign that a different world is possible” where conflicts can be resolved with dialogue, not weapons.

Pope Leo celebrated the largest event yet of his nearly three-month tenure on Sunday, encouraging a crowd of more than a million Catholic young people gathered in a field on the outskirts of Rome to spread their faith.

The Pontiff celebrated the concluding mass of one of the most important events of the Holy Year. A million faithful filled the Tor Vergata esplanade in Rome. Pope Leo sent a message of hope for the young people afflicted by wars and recalled the words of his predecessor.