According, therefore, to the account of Eusebius, Constantine built _one_ church, and only one. This was not over the sepulchre at all, but to the east of it, and separated from it by a space open to the heavens, the sepulchre itself being set about with pillars. In the transport of enthusiasm which followed the conversion of Constantine, the Jews probably found it convenient to keep as quiet as possible. They held at this time exclusive possession of four large towns in Galilee where they governed themselves, or rather submitted to the government of the Rabbis. Attempts were made to convert them. Sylvester succeeded, it is related, in converting a number of them by a miracle. For a conference was held between the Christians and Jews in the presence of the Emperor himself. One of the Rabbis asked permission that an ox should be brought in. He whispered in the ear of the animal the ineffable name of God, and the beast fell dead. “Will you believe,” asked the Pope, “if I raise him to life again?” They agreed. Sylvester adjured the ox, in the name of Christ, and if Jesus was veritably the Messiah, to come to life again. The beast rose and quietly went on feeding. Whereupon the Jews all went out and were baptized. Stories of this kind were invented whenever it seemed well to stimulate zeal or to promote conversions. The Jews were probably only saved from a cruel persecution by the death of the zealous convert. Already severe decrees had been issued. Constantine’s laws enact that any Jew who endangers the life of a Christian convert shall be buried alive; that no Christian shall be permitted to become a Jew; that no Jew shall possess Christian slaves. But the laws were little lightened in their favour by the successor of Constantine, and the Jews made one or two local and feeble attempts to rise in Judæa and in Alexandria. Here they had an opportunity of plundering and slaying the Christians by joining the side of Arius.