er, before he went to Rome, founded the see of Antioch, is
attested by Eusebius,[1] Origen,[2] St. Jerom,[3] St. Innocent,[4] Pope
Gelasius, in his Roman Council,[5] Saint Chrysostom, and others. It was
just that the prince of the apostles should take this city under his
particular care and inspection, which was then the capital of the East,
and in which the faith took so early and so deep root as to give birth
in it to the name of Christians. St. Chrysostom says, that St. Peter
made there a long stay: St. Gregory the Great,[6] that he was seven
years bishop of Antioch; not that he resided there all that time, but
only that he had a particular care over that church. If he sat
twenty-five years at Rome, the date of his establishing his church at
Antioch must be within three years after our Saviour's ascension; for in
that supposition he must have gone to Rome in the second year of
Claudius.

The festival of St. Peter's chair in general, Natale Petri de Cathedra,
is marked on this day in the most ancient calendar extant, made in the
time of pope Liberius, about the year 354.[7] It also occurs in
Gregory's sacramentary, {443} and in all the martyrologies. It was kept
in France in the sixth century, as appears from the council of Tours,[8]
and from Le Cointo.[9]

* * * * *

In the first ages it was customary, especially in the East, for every
Christian to keep the anniversary of his baptism, on which he renewed
his baptismal vows, and gave thanks to God for his heavenly adoption:
this they called their spiritual birthday. The bishops in like manner
kept the anniversary of their own consecration, as appears from four
sermons of St. Leo, on the anniversary of his accession or assumption to
the pontifical dignity, and this was frequently continued by the people
after their decease, out of respect to their memory. St. Leo says, we
ought to celebrate the chair of St. Peter with no less joy than the day
of his martyrdom; for as in this he was exalted to a throne of glory in
heaven, so by the former he was installed head of the church on
earth.[10]

On this festival we are especially bound to adore and thank the divine
goodness for the establishment and propagation of his church, and
earnestly to pray that in his mercy he preserve the same, and dilate its
pale, that his name may be glorified by all nations, and by all hearts,
to the boundaries of the earth, for his divine honor and the salvation