When the emperor Julian, in order to weaken the authority of the prophecies, undertook to rebuild the temple of the Jews, numerous were the prodigies related by which God confounded his designs, and Jerusalem, for that attempt even, became more dear to the disciples of Jesus Christ. The Christians did not cease to visit Palestine. St. Jerome, who, towards the end of the fourth century, had retired to Bethlehem, informs us in one of his letters that pilgrims arrived in crowds in Judea, and that around the holy tomb the praises of the Son of God were to be heard, uttered in many languages. From this period, pilgrimages to the Holy Land were so numerous, that several doctors and fathers of the Church thought it their duty to point out the abuses and danger of the practice. They told Christians that long voyages might turn them aside from the path of salvation; that their God was not confined to one city; that Jesus Christ was everywhere where faith and good works were to be found; but such was the blind zeal which then drew the Christians towards Jerusalem, that the voice of the holy doctors was scarcely heard.[4] The counsels of enlightened piety were not able to abate the ardour of the pilgrims, who believed they should be wanting in faith and zeal, if they did not adore Jesus Christ in the very places where, according to the expression of St. Jerome, the light of the gospel first shone from the top of the holy cross. As soon as the people of the West became converted to Christianity, they turned their eyes to the East. From the depths of Gaul, from the forests of Germany, from all the countries of Europe, new Christians were to be seen hastening to visit the cradle of the faith they had embraced. An itinerary for the use of pilgrims served them as a guide from the banks of the Rhone and the Dordogne to the shores of the Jordan, and conducted them, on their return, from Jerusalem to the principal cities of Italy.[5] When the world was ravaged by the Goths, the Huns, and the Vandals, the pilgrimages to the Holy Land were not at all interrupted. Pious travellers were protected by the hospitable virtues of the barbarians, who began to respect the cross of Christ, and sometimes even followed the pilgrims to Jerusalem. In these times of trouble and desolation, a poor pilgrim, who bore his scrip and staff, often passed through fields of carnage, and travelled without fear amidst armies which threatened the empires of the East and the West.