Despite high temperatures, thousands of pilgrims stood in the sun to pray the Regina Coeli with Pope Francis.
The Pope discussed the Last Supper and the love that Jesus Christ has taught Christians.
"A love that also manifests itself when there are differences in opinion or character. But there's that love that is greater than these differences, that which Jesus teaches us. It is a love that is new, because it is renewed by Jesus and His Spirit. It is a love freed from egoism.”
Sunday was also Mother's Day in many parts of the world. Pope Francis took time to pay tribute to mothers with a special message.
"Now I turn to all the mothers. Are there some of them here, here in the square? Are there? An applause for the mommies in the square. And this applause embraces all the mothers, all our dear mothers, those that live with us physically, but also those that live with us spiritually.”
An association that raises money for cancer research and the March for Life, which took place that morning in Rome, also received support from the Pope.