
His
place and date of birth are unknown but we are gratified by what we do know of
Pope St. Leo. He served as a deacon
during the reign of Pope Celestine I (422-432).
We know he was involved in combating Nestorianism and during the papacy
of Sixtus III (432-440), he was sent to Gaul by Emperor Valentinian III
on a diplomatic mission to settle a dispute.
While in Gaul on this mission he was chosen to succeed to the papacy at
the death of Sixtus.
At
the time he ascended to the papal chair, the West was experiencing the fall of
Western Roman Empire to barbarian tribes and the Eastern Empire was consumed
with its own problems, especially doctrinal disputes. Leo’s chief aim was to preserve the unity of
the Church and he succeeded magnificently amidst the storms by clinging to
Christ in the grace of wisdom and courage.
Pope Leo had to combat a
long list of heretical sects, including Arians, Pelagians, Nestorians and
Manichaeans. Some of the Manichaeans
were converted, but he burned their books and banished the remainder (who had
been driven from Africa by the Vandals) from Rome and warned other Italian
bishops to do the same. The Emperor issued a decree to support this and even
Oriental bishops complied. He arranged for a synod of bishops in Spain and Gaul
in 446-447 to deal with the heresy of Priscillianism (derived from dualistic
Gnostic-Manichaen doctrine taught in Egypt). St. Augustine had written a famous
work to oppose them, De Mendacio.
The
primacy of the Bishop of Rome was asserted by Leo as he insisted on
ecclesiastical discipline throughout the Church. He was particularly effective
in solving the theological/Christological disputes which consumed the Eastern
Church. In the Monophysitism controversy his energy and diplomatic
skills prevailed. Bishop Flavian had taken action against an
influential abbot in Constantinople, named Eutyches,
who was teaching that Christ’s human nature was not truly human. A coalition led by the Patriarch of Alexandria,
Bishop Dioscurus, formed against Flavian,
Patriarch of Constantinople. Flavian sent a letter to
Pope Leo the Great in 449 (after
holding a Council among his clergy to settle a doctrinal
dispute) showing the heretical teaching of the Monophysites.
Leo sent his famous letter, the Tome
of Leo, which presented a very balanced theology on the
personhood of Christ, accepting the
two natures of Christ, but emphasizing their close, inseparable unity. He
wrote, “One and the same Christ, Son, Lord, Only-begotten, known in two
natures, without confusion, without change, without division, without
separation.” (p.222, Aquilina).
This tome, however, was
not even read, despite the pleas of papal legates sent by Leo, at the so-called
“Robber’s Synod” called by Bishop Dioscurus of Alexandria, which deposed
Flavian and caused his early death.
However, when Emperor Theodosius II died and his more orthodox sister
Pulcheria took the imperial throne, an ecumenical Council was called.
This was the Council of
Chalcedon in 451, which stripped Patriarch Dioscurus of his office and
condemned the Monophysite doctrine of Eutyches... Pope Benedict XVI calls it “the most
important assembly ever to have been celebrated in the history of the Church”
(p.9, Church Fathers and Teachers)
because it completed the Christological work of the three previous councils
(Nicene, 325; Constantinople, 381 and Ephesus in 431). These four ecumenical Councils defined the
Trinity and were compared with the four Gospels by Gregory the Great. Pope Leo issued a circular letter in 453
confirming their doctrinal decisions.
The
other response was to fight for the welfare of the population and here we have
an image of Pope Leo the Great (440-461). He defended the city of Rome when it was threatened with destruction
on two occasions. In the year 452 A.D.,
Attila and the Huns had broken into Italy and sacked cities. About to do the same to Rome, Leo went out
into the mountains to meet Attila and persuaded him not to sack the city by
God’s grace. How was this
accomplished? According to Sr. Catherine
Goddard Clark:
“Attila's servants, so the story is told, asked him
why he had reversed his custom and capitulated so easily to the Bishop of Rome.
The brigand chief answered that all the while the Pope was speaking, he,
Attila, the generator of terror in others, was himself consumed in fear, for
there had appeared in the air above the Pope's head a figure in the dress of a
priest, holding in his hand a drawn sword with which he made as if to kill him
unless he consented to do as Leo asked. The figure was that of Peter!"
In
455 A.D. Genseric (Gunderic) the
Vandal also threatened to destroy Rome, but this time Leo could only convince
the marauders not to destroy the city, which they sacked. He persuaded Genseric not to mercilessly
slaughter the population. It was the
Pope and Christian bishops who remained with the people, stood in the gap and
cared for them as good shepherds as the society was disintegrating around them. Thus, Leo is an example of heroism.
By
the year 476 we have the last of the Roman emperors in the West, Romulus "Augustulus," was deposed by the Gothic king Odoacer. At that point all of the rulers of the West
came from these various tribes.
Christianity was tolerated, somewhat persecuted, but the Western empire
was dead. In the midst of this were
seeds of a new birth. Christianity’s task was to convert these conquerors. Christians were not totally destroyed, though
there cities might have been, so there task was to convert these tribes.
This excerpt from St.
Leo's Sermon 2 on the Ascension of the Lord Jesus Christ (Sermo
2 de Ascensione1-4: PL 54,397-399) is used in the Roman Catholic Office of
Readings for Friday of the 6th week in Eastertide. He explains how the
Ascenion increases our faith and how our Redeemer's visible presence after the
Ascension passes into the sacraments.
At Easter, beloved
brethren, it was the Lord’s resurrection which was the cause of our joy; our
present rejoicing is on account of his ascension into heaven. With all due
solemnity we are commemorating that day on which our poor human nature was
carried up, in Christ, above all the hosts of heaven, above all the ranks of
angels, beyond the highest heavenly powers to the very throne of God the
Father. It is upon this ordered structure of divine acts that we have been
firmly established, so that the grace of God may show itself still more marvelous
when, in spite of the withdrawal from men’s sight of everything that is rightly
felt to command their reverence, faith does not fail, hope is not shaken,
charity does not grow cold.
For such is the power of
great minds, such is the light of truly believing souls, that they put
unhesitating faith in what is not seen with the bodily eye; they fix their
desires on what is beyond sight. Such fidelity could never be born in our
hearts, nor could anyone be justified by faith, if our salvation lay only in
what was visible.
And so our Redeemer’s
visible presence has passed into the sacraments. Our faith is nobler and stronger
because sight has been replaced by a doctrine whose authority is accepted by
believing hearts, enlightened from on high. This faith was increased by the
Lord’s ascension and strengthened by the gift of the Spirit; it would remain
unshaken by fetters and imprisonment, exile and hunger, fire and ravening
beasts, and the most refined tortures ever devised by brutal persecutors.
Throughout the world women no less than men, tender girls as well as boys, have
given their life’s blood in the struggle for this faith. It is a faith that has
driven out devils, healed the sick and raised the dead.
The truth is that the
Son of Man was revealed as Son of God in a more perfect and transcendent way
once he had entered into his Father’s glory; he now began to be indescribably
more present in his divinity to those from whom he was further removed in his
humanity. A more mature faith enabled their minds to stretch upward to the Son
in his equality with the Father; it no longer needed contact with Christ’s
tangible body, in which as man he is inferior to the Father. For while his
glorified body retained the same nature, the faith of those who believed in him
was now summoned to heights where, as the Father’s equal, the only-begotten Son
is reached not by physical handling but by spiritual discernment.


