III. We notice again in this connection the place where the Apostles met, and the manner in which they continued to assemble after the ascension, and while they waited for the fulfilment of the Master's promise: "They returned unto Jerusalem, and they went up into an upper chamber." Round this upper room at Jerusalem has gathered many a story dating from very early ages indeed. The upper room in which they assembled has been identified with the chamber in which the Last Supper was celebrated, and where the gift of the Holy Ghost was first received, and that from ancient times. Epiphanius, a Christian writer of the fourth century, to whom we owe much precious information concerning the early ages of the Church, tells us that there was a church built on this spot even in Hadrian's time, that is, about the year 120 A.D.[38] The Empress Helena, again, the mother of Constantine the Great, identified or thought she identified the spot, and built a splendid church to mark it out for all time; and succeeding ages have spent much care and thought upon it. St. Cyril of Jerusalem was a writer little referred to and little known in our day, who yet has much precious truth to teach us. He was a learned bishop of Jerusalem about the middle of the fourth century, and he left us catechetical lectures, showing what pains and trouble the Early Church took in the inculcation of the fundamental articles of the Christian creed. His catechetical lectures, delivered to the candidates for baptism, contain much valuable evidence of the belief, the practice, and the discipline of the early ages, and they mention among other points the church built upon Mount Zion on the spot once occupied by this upper room. The tradition, then, which deals with this chamber and points out its site goes back to the ages of persecution; and yet it is notable how little trouble the book of the Acts of the Apostles takes in this matter. It is just the same with this upper chamber as with the other localities in which our Lord's mighty works were wrought. The Gospels tell us not where His temptations occurred, though man has often tried to fix the exact locality. The site of the Transfiguration and of the true Mount of Beatitudes has engaged much human curiosity; the scene of Peter's vision at Joppa and of St. Paul's conversion on the road to Damascus,--all these and many other divinely honoured localities of the Old as well as of the New Testament have been shrouded from us in thickest darkness, that we might learn not to fix our eyes upon the external husk, the locality, the circumstances, the time, which are nothing, but upon the interior spirit, the love, the unity, the devotion and self-sacrifice which constitute in the Divine sight the very heart and core of our holy religion.[39] They assembled themselves, too, in this upper chamber in a united spirit, such as Christianity, though only in an undeveloped shape, already dictated.