Around the year 540, a boy named Gregory was born in Rome. His family was one of the richest and most important in the city: their house stood on top of the Caelian Hill, with grand halls, gardens, and servants. But theirs was not a family rich only in coins. Gregory's mother, Silvia, was a woman of deep prayer, and several people from that household would one day become saints.

Gregory grew up, studied hard, and became an important man. By the time he was about thirty, he was already Prefect of Rome, the highest office in the city, responsible for looking after everything and everyone. They were difficult times, full of wars, floods from the river Tiber, and shortages of food. Gregory did his work well, and everyone said a brilliant future lay ahead of him.

But in the quiet of his heart, Gregory felt God calling him to another kind of life. One day he made a decision that astonished all of Rome: he gave up his office as prefect, sold what he owned to help the poor, and turned his own house on the Caelian Hill into a monastery dedicated to Saint Andrew. The most powerful young man in the city put on the plain habit of a monk and began a life of prayer, study, and work. Later he would say those were the happiest years of his whole life.

One day, a very old tradition tells us, Gregory was walking through the market of Rome when he saw something that broke his heart: boys being sold as slaves. Their skin was very fair, their hair was golden, and their eyes were sad. Gregory had never seen people from their land before.

— Where do these boys come from? — he asked.

— They are Angles, from the island of Britain — came the answer.

Gregory looked again at those faces and said, thoughtfully:

— Not Angles, but angels. Faces like these ought to know the God of heaven.

In that moment a dream was born in his heart: to carry the faith of Jesus to the faraway land of those boys, where hardly anyone had ever heard the Gospel. He wanted to set out as a missionary himself, but the people of Rome would not let him go; they loved him far too much to lose him. The dream, though, stayed tucked away, waiting for its proper hour.

The pope saw how valuable this wise monk was and sent him as his representative to Constantinople, the capital of the empire in the East. Gregory served well and afterwards returned to his beloved monastery. But the peace did not last long. In the year 590, a terrible plague swept through Rome, and the pope himself, Pelagius II, fell ill and died. The people, the clergy, and the senate chose the new pope at once, and everyone spoke a single name: Gregory.

Gregory did not want it at all. He felt unworthy, and he even thought of slipping out of the city to escape the election. In the end, he understood that this was God's will, and he accepted with an obedient heart. Tradition tells that in those days of plague he led a great procession of prayer through the streets of Rome, and as it passed near the tomb of the emperor Hadrian, he saw an angel high above it, sliding his sword back into its sheath as a sign that the plague was about to end. Because of this, that round fortress by the river is called Castel Sant'Angelo, the Castle of the Holy Angel, to this very day.

As pope, Gregory went on living like a monk: simple food, simple clothes, constant prayer. In the letters he wrote, he never signed himself with grand titles. Instead he chose a name that said everything: servus servorum Dei, the servant of the servants of God. Popes still use that title today, inherited from him.

And how he served. In years of famine, Gregory opened the Church's granaries and had wheat handed out to the people. He kept lists with the names of the city's poor so that no one would be forgotten, paid ransoms to set prisoners free, and negotiated peace when the Lombards threatened Rome. It was said he could not sit down to dinner knowing that someone on his own street was hungry.

Then, one day, the hour came for the old dream. Gregory chose forty monks from his monastery, placed a monk named Augustine at their head, and sent them on a long journey to the island of Britain, the land of the boys from the market. The monks arrived in the kingdom of Kent, where King Ethelbert received them, listened to the message of Jesus, and in time asked for baptism himself. Little by little, the faith spread across the whole island. England learned to pray, and it had all begun with one look of compassion in a Roman market.

Gregory also cared for the prayer of the Church with special tenderness. He organized the celebration of Mass, wrote books that taught generations of priests and bishops, and encouraged beautiful singing in the churches, that calm kind of chant that sounds like a prayer taking flight. Centuries later, this way of singing was given the name Gregorian chant in his honor, for tradition has always linked his name to that music.

Though he was often ill in his final years, he never stopped working and writing. Saint Gregory died on the twelfth of March in the year 604, after fourteen years as pope. The Church declared him a Doctor of the Church, one of the four great teachers of the West, and the people gave him the same title as Saint Leo: the Great. Great not because he commanded so much, but because he served more than anyone.