Ambrose of Milan

Ambrose was born about 339 at Trier, where his father served as praetorian prefect of Gaul, one of the four or five highest offices in the Western empire. The father died young and the family went back to Rome. Ambrose was trained in law and Greek, entered the imperial service, and by about 372 was governor of Aemilia and Liguria, with his seat at Milan. Milan was then the working capital of the West, where the emperor actually lived.

In 374 the bishop of Milan died, and the city split. The Arian party and the Nicene party each packed the basilica, and it looked like a riot. The governor went in to keep order and make a speech about calm. Someone in the crowd, the tradition says a child, called out, Ambrose for bishop, and both sides took it up.

He was thirty-five, a career administrator, and not baptized. He tried to get out of it. He was baptized, ordained through every clerical rank in eight days, and consecrated bishop on 7 December 374. He gave his land to the church and the rest of his money to the poor, hired a priest named Simplicianus to teach him theology, and started reading Greek Christian writers no one in the Latin West had absorbed yet, Origen, Basil, Athanasius. He learned the job in public, at speed.

He turned out to be extraordinary at it. He preached every Sunday and taught the congregation to sing: antiphonal hymns, two sides of the church answering each other, an Eastern practice he planted in the West. Some of the hymns are his own and are still sung. Augustine, who heard him, says he wept at the singing and could not stop.

He also decided that the church was not a department of the state, and he made it stick three times.

In 385 and again in 386 the Empress Justina, an Arian, demanded that one of Milan's basilicas be handed over for Arian worship, with her son the boy-emperor Valentinian II behind the order. Ambrose refused. Imperial troops surrounded the church. He and the congregation stayed inside, day and night, and he taught them the hymns to keep their courage up through the siege. He sent back the line that made the position permanent: the emperor is within the church, not above it. The troops withdrew.

He pressed the same claim in 388 over Callinicum, where a mob of Christians had burned a synagogue and Theodosius ordered the bishop to pay for rebuilding it, a just order, and Ambrose fought it until the emperor gave way. It is the ugliest episode in his record and should be named as what it is.

Then came Thessalonica. In 390 a riot there killed the imperial garrison commander, and Theodosius answered by turning his soldiers loose on the crowd in the circus. Something like seven thousand people were killed in a few hours. Ambrose wrote him a private letter, it survives, telling him he could not celebrate the Eucharist in his presence until he repented publicly, and that David had been a great king and still said, I have sinned. When the emperor came to the church in Milan, the bishop met him at the door and did not let him in.

Theodosius, master of the Roman world, took off his imperial robes, stood among the penitents for months, and was readmitted at Christmas. No one had seen anything like it. It set a precedent the West lived under for a thousand years: there is a bar the state does not cross, and someone will be standing at the door.

His other lasting work was quieter. He wrote On the Duties of the Clergy, a Christian answer to Cicero's book on duty, and treatises on the Holy Spirit and on the sacraments that carried Greek theology into Latin. And he preached the sermons that a rhetoric professor named Augustine came to hear for the technique. Ambrose showed him how to read the Old Testament without stumbling over its surface, took his confession, and baptized him at Easter 387.

He kept his door open, ate almost nothing, and worked past exhaustion. He died on Good Friday, 4 April 397, and Milan filled with people who had watched a governor become a shepherd.

Sources: Paulinus of Milan, Life of Saint Ambrose; Ambrose, Letters (including Letter 51 to Theodosius); Augustine, Confessions, books 5–9; Theodoret, Ecclesiastical History; Philip Schaff, ed., Nicene and Post-Nicene Fathers, Series II, vol. 10.