The church did not stand alone. Beside it and united with it, Justinian built also a church dedicated to the Apostles Peter and Paul,[86] so that the two buildings formed a double sanctuary, having a common court and a continuous narthex. They were equal in size and in the richness of the materials employed in their construction, and together formed one of the chief ornaments of the palace and the city. There was, however, one striking difference between them; SS. Sergius and Bacchus was a domical church, while SS. Peter and Paul was a basilica. Styles of ecclesiastical architecture destined soon to blend together in the grandeur and beauty of S. Sophia were here seen converging towards the point of their union, like two streams about to mingle their waters in a common tide. A similar combination of these styles occurs at Kalat-Semân in the church of S. Symeon Stylites, erected towards the end of the fifth century, where four basilicas forming the arms of a cross are built on four sides of an octagonal court.[87]

The saints to whom the church was dedicated were brother officers in the Roman army, who suffered death in the reign of Maximianus,[88] and Justinian's particular veneration for them was due, it is said, to their interposition in his behalf at a critical moment in his career. Having been implicated, along with his uncle, afterwards Justin I., in a plot against the Emperor Anastasius, he lay under sentence of death for high treason; but on the eve of his execution, a formidable figure, as some authorities maintain,[89] or as others affirm, the saints Sergius and Bacchus, appeared to the sovereign in a vision and commanded him to spare the conspirators. Thus Justinian lived to reach the throne, and when the full significance of his preservation from death became clear in the lustre of the imperial diadem, he made his deliverers the object of his devout regard. Indeed, in his devotion to them he erected other sanctuaries to their honour also in other places of the Empire.[90] Still this church, founded early in his reign, situated beside his residence while heir-apparent, and at the gates of the Great Palace, and withal a gem of art, must be considered as Justinian's special thankoffering for his crown.

With the church of SS. Sergius and Bacchus was associated a large monastery known, after the locality in which it stood, as the monastery of Hormisdas, ἐν τοῖς Ὁρμίσδου. It was richly endowed by Justinian.[91]

Note

There is some obscurity in regard to the church of SS. Peter and Paul. According to Theophanes,[92] the first church in Constantinople built in honour of those apostles was built at the suggestion of a Roman senator Festus, who on visiting the eastern capital, in 499, was astonished to find no sanctuary there dedicated to saints so eminent in Christian history, and so highly venerated by the Church of the West. As appears from a letter addressed in 519 to Pope Hormisdas by the papal representative at the court of Constantinople, a church of that dedication had been recently erected by Justinian while holding the office of Comes Domesticorum under his uncle Justin I. 'Your son,' says the writer, 'the magnificent Justinian, acting as becomes his faith, has erected a basilica of the Holy Apostles, in which he wishes relics of the martyr S. Laurentius should be placed.' 'Filius vester magnificus vir Justinianus, res convenientes fidei suae faciens, basilicam sanctorum Apostolorum in qua desiderat Sancti Laurentii martyris reliquias esse, constituit.'[93] We have also a letter to the Pope from Justinian himself, in which the writer, in order to glorify the basilica which he had built in honour of the apostles in his palace, begs for some links of the chains which had bound the apostles Peter and Paul, and for a portion of the gridiron upon which S. Laurentius was burnt to death.[94] The request was readily granted in the same year.

The description of the basilica, as situated in the palace then occupied by Justinian, leaves no room for doubt that the sanctuary to which the letters just quoted refer was the church of SS. Peter and Paul which Procopius describes as near (παρά) the palace of Hormisdas. In that case the church of SS. Peter and Paul was built before the church of SS. Sergius and Bacchus, for the inscription on the entablature in the latter church, not to mention Cedrenus, distinctly assigns the building to the time when Justinian and Theodora occupied the throne. This agrees with the fact that Procopius[95] records the foundation of SS. Peter and Paul before that of SS. Sergius and Bacchus, and if this were all he did the matter would be clear. But, unfortunately, this is not all Procopius has done. For after recording the erection of SS. Sergius and Bacchus, he proceeds to say that Justinian subsequently (ἔπειτα) joined another (ἄλλο) church,[96] a basilica, to the sanctuary dedicated to those martyrs, thus leaving upon the reader's mind the impression that the basilica was a later construction. To whom that basilica was consecrated Procopius does not say. Was that basilica the church of SS. Peter and Paul which Procopius mentioned before recording the erection of SS. Sergius and Bacchus? Is he speaking of two or of three churches? The reply to this question must take into account two facts as beyond dispute: first, that the church of SS. Peter and Paul, as the letters cited above make clear, was earlier than the church of SS. Sergius and Bacchus; secondly, that the basilica united to the latter sanctuary was dedicated to the two great apostles; for scenes which, according to one authority,[97] occurred in S. Peter's took place, according to another authority,[98] in the church of SS. Sergius and Bacchus. In the face of these facts, Procopius is either mistaken in regard to the relative age of the two sanctuaries, or he has not expressed his meaning as clearly as he might have done. To suppose that two sanctuaries dedicated to the great apostles were built by Justinian within a short time of each other in the same district, one within the palace, the other outside the palace, is a very improbable hypothesis. The question on which side of SS. Sergius and Bacchus the basilica of SS. Peter and Paul stood, seems decided by the fact that there is more room for a second building on the north than on the south of Kutchuk Agia Sofia. Furthermore, there are traces of openings in the north wall of the church which could serve as means of communication between the two adjoining buildings. Ebersolt, however, places SS. Peter and Paul on the south side of SS. Sergius and Bacchus.[99]

A remarkable scene was witnessed in the church in the course of the controversy which raged around the writings known in ecclesiastical history as 'The Three Chapters,' the work of three theologians tainted, it was alleged, with the heretical opinions of Nestorius. Justinian associated himself with the party which condemned those writings, and prevailed upon the majority of the bishops in the East to subscribe the imperial decree to that effect. But Vigilius, the Pope of the day, and the bishops in the West, dissented from that judgment, because the authors of the writings in question had been acquitted from the charge of heresy by the Council of Chalcedon. To condemn them after that acquittal was to censure the Council and reflect upon its authority. Under these circumstances Justinian summoned Vigilius to Constantinople in the hope of winning him over by the blandishments or the terrors of the court of New Rome. Vigilius reached the city on the 25th of January 547, and was detained in the East for seven years in connection with the settlement of the dispute. He found to his cost that to decide an intricate theological question, and above all to assert 'the authority of S. Peter vested in him' against an imperious sovereign and the jealousy of Eastern Christendom, was no slight undertaking. Pope and Emperor soon came into violent collision, and fearing the consequences Vigilius sought sanctuary in the church of S. Peter[100] as he styles it, but which Byzantine writers[101] who record the scene name S. Sergius.

PLATE XII.

SS. Sergius and Bacchus.
Capital.
S. John of the Studion.
Capital in the Narthex.

To face page 66.