Augustine saw marriage as a covenant between one man and one woman, which may not be broken. It was the Creator who established monogamy: "Therefore, the first natural bond of human society is man and wife." Such marriage was confirmed by the Saviour in the Gospel of Matthew (Mat 19:9) and by His presence at the wedding in Cana (John 2:2). In the Church—the City of God—marriage is a sacrament and may not and cannot be dissolved as long as the spouses live: "But a marriage once for all entered upon in the City of our God, where, even from the first union of the two, the man and the woman, marriage bears a certain sacramental character, can in no way be dissolved but by the death of one of them." In chapter 7, Augustine pointed out that the Roman Empire forbad polygamy, even if the reason of fertility would support it: "For it is in a man's power to put away a wife that is barren, and marry one of whom to have children. And yet it is not allowed; and now indeed in our times, and after the usage of Rome (nostris quidem iam temporibus ac more Romano), neither to marry in addition, so as to have more than one wife living." Further on he notices that the Church's attitude goes much further than the secular law regarding monogamy: It forbids remarrying, considering such to be a form of fornication: "And yet, save in the City of our God, in His Holy Mount, the case is not such with the wife. But, that the laws of the Gentiles are otherwise, who is there that knows not."