IV. In order, then, that man might not be an undying or ever-living evil, as would have been the case if sin were dominant within him, as it had sprung up in an immortal body, and was provided with immortal sustenance, God for this cause pronounced him mortal, and clothed him with mortality. For this is what was meant by the coats of skins, in order that, by the dissolution of the body, sin might be altogether destroyed from the very roots, that there might not be left even the smallest particle of root from which new shoots of sin might again burst forth.