IX. (31) After this preface we must now proceed to explain the words: "The Lord God," says Moses, "cast a deep trance upon Adam, and sent him to sleep." He speaks here with great correctness, for a trance and perversion of the mind is its sleep. And the mind is rendered beside itself when it ceases to be occupied about the things perceptible only by the intellect which present themselves to it. And when it is not energizing with respect to them it is asleep. And the expression, "it is in a trance," is very well employed, as it means that it is perverted and changed, not by itself, but by God, who presents to it, and brings before it, and sends upon it the change which occurs to it. (32) For the case is this:--if it were in my own power to be changed, then whenever I chose I should exercise this power, and whenever I did not choose I should continue as I am, without any change. But now change attacks me from an opposite direction, and very often when I am desirous to turn my intellect to some fitting subject, I am swallowed up by an influx contrary to what is fitting: and on the other hand, when I conceive an idea respecting something unseemly, I discard it by means of pleasant notions while God by his own grace pours into my soul a sweet stream instead of the salt flood. (33) It is necessary therefore, that every created thing should at times be changed. For this is a property of every created thing, just as it is an attribute of God to be unchangeable. But of these beings who have been changed, some remain in their altered state till their final and complete destruction, though others are only exposed to the ordinary vicissitudes of human nature; and they are immediately preserved. (34) On which account Moses says that "God will not suffer the destroyer to enter into your houses to smite Them."[Ex 12:23.] For he does permit the destroyer (and change is the destruction of the soul) to enter into the soul, in order to exhibit the peculiar characteristic of the created being. But God will not permit the offspring of the seeing Israel to be changed in such a manner as to be stricken down by the change; but he will compel it to emerge and rise up again like one who rises up from the deep, and so he will cause it to be saved.