A detailed description of the function is given in Silvia’s diary. Unfortunately the beginning is missing,[337] and the account opens with the return of the great procession which took place annually from Jerusalem to Bethlehem the evening before the feast. The next morning, the procession returned to Jerusalem and proceeded to the Church of the Anastasis, which was richly decorated. The monks remained all night in the church at Bethlehem, which, all through the octave, remained in festal array.[338] A procession to Bethlehem, on the Epiphany would have no meaning, if the baptism of Christ was the only event commemorated at that feast, for this, of course, took place in the Jordan. In Jerusalem, as in the other Eastern Churches, no special Christmas festival had been as yet instituted, still at the commencement of the fifth century there were some who regarded the Epiphany as the day of Christ’s nativity in the flesh, although, as St Jerome says,[339] the Son of God did not reveal Himself in flesh but rather concealed Himself. Indeed, if we are to believe Cosmas Indicopleustes, who lived in the middle of the sixth century, the nativity of Christ was commemorated at Jerusalem, and there only on the Epiphany—“a superstitious fancy,” as he calls it.[340] On the other hand, it has been stated that Bishop Juvenal (425-458), who obtained for the Church of Jerusalem patriarchal rank, introduced the feast of Christ’s birth.[341] Perhaps it was specially difficult to establish this festival in Jerusalem on the 25th December because another festival was already observed there on that day—the commemoration of David and the Apostle St James.[342] Their commemoration, along with that of St Joseph, is kept both by the Greek Church and the Church of Jerusalem on the Sunday before Christmas.[343] A document already referred to, dating from the end of the ninth or beginning of the tenth century, affords an interesting proof of the manner in which these matters which we have placed before the reader were regarded at a later date. John, Bishop of Nicæa, who flourished about the year 900, endeavoured to induce the Armenians to adopt the 25th December as the day of Christ’s birth, and set down in an elaborate treatise the reasons he thought calculated to influence them. This composition is especially interesting because in it the introduction of Christmas is ascribed to a particular individual, none other than Pope Julius I. (337-352). Bishop Cyril of Jerusalem (348-386) is said to have corresponded with him on this question. Even if, from point of view of dates, this were not impossible, the letter of Cyril would in itself give rise to suspicion.[344] For Cyril would have been more likely to introduce or establish the feast on another day, while it is historically certain it was not yet observed in Jerusalem in 385.