16. |And the city is placed in a square.|] The city which he says is squared, he says also is resplendent with gold and precious stones, and has a sacred street, and a river through the midst of it, and the tree of life on either side, bearing twelve manner of fruits throughout the twelve months; and that the light of the sun is not there, because the Lamb is the light of it; and that its gates were of single pearls; and that there were three gates on each of the four sides, and that they could not be shut. I say, in respect of the square city, he shows forth the united multitude of the saints, in whom the faith could by no means waver. As Noah is commanded to make the ark of squared beams, that it might resist the force of the deluge, by the precious stones he sets forth the holy men who cannot waver in persecution, who could not be moved either by the tempest of persecutors, or be dissolved from the true faith by the force of the rain, because they are associated of pure gold, of whom the city of the great King is adorned. Moreover, the streets set forth their hearts purified from all uncleanness, transparent with glowing light, that the Lord may justly walk up and down in them. The river of life sets forth that the grace of spiritual doctrine flowed through the minds of the faithful, and that manifold flourishing forms of odours germinated therein. The tree of life on either bank sets forth the Advent of Christ, according to the flesh, who satisfied the peoples wasted with famine, that received life from One by the wood of the Cross, with the announcement of God's word. And in that he says that the sun is not necessary in the city, he shows, evidently, that the Creator as the immaculate light shines in the midst of it, whose brightness no mind has been able to conceive, nor tongue to tell.
In that he says there are three gates placed on each of the four sides, of single pearls, I think that these are the four virtues, to wit, prudence, fortitude, justice, temperance, which are associated with one another. And, being involved together, they make the number twelve. But the twelve gates we believe to be the number of the apostles, who, shining in the four virtues as precious stones, manifesting the light of their doctrine among the saints, cause it to enter the celestial city, that by intercourse with them the choir of angels may be gladdened. And that the gates cannot be shut, it is evidently shown that the doctrine of the apostles can be separated from rectitude by no tempest of contradiction. Even though the floods of the nations and the vain superstitions of heretics should revolt against their true faith, they are overcome, and shall be dissolved as the foam, because Christ is the Rock by which, and on which, the Church is founded. And thus it is overcome by no traces of maddened men. Therefore they are not to be heard who assure themselves that there is to be an earthly reign of a thousand years; who think, that is to say, with the heretic Cerinthus. For the kingdom of Christ is now eternal in the saints, although the glory of the saints shall be manifested after the resurrection.