[104] For, if their clay had become mortar, then perchance that earthy thing perceptible by the outward senses, which is for ever and ever in a continued state of flux, would have been able to arrive at a safe and unalterable power; but since, on the contrary, their mortar became mere slime, we must not despair, for there is in this, certain hope that the strong fortifications of vice may be overthrown by the might of God.