11. But, to establish the point more clearly, it will not be superfluous to employ another illustration, as if, _e.g._, one were to say that it is the sun which hardens and liquefies, although liquefying and hardening are things of an opposite nature. Now it is not incorrect to say that the sun, by one and the same power of its heat, melts wax indeed, but dries up and hardens mud:[449] not that its power operates one way upon mud, and in another way upon wax; but that the qualities of mud and wax are different, although according to nature they are one thing,[450] both being from the earth. In this way, then, one and the same working upon the part of God, which was administered by Moses in signs and wonders, made manifest the hardness of Pharaoh, which he had conceived in the intensity of his wickedness[451], but exhibited the obedience of those other Egyptians who were intermingled with the Israelites, and who are recorded to have quitted Egypt at the same time with the Hebrews. With respect to the statement that the heart of Pharaoh was subdued by degrees, so that on one occasion he said, “Go not far away; ye shall go a three days’ journey, but leave your wives, and your children, and your cattle,”[452] and as regards any other statements, according to which he appears to yield gradually to the signs and wonders, what else is shown, save that the power of the signs and miracles was making some impression on him, but not so much as it ought to have done? For if the hardening were of such a nature as many take it to be, he would not indeed have given way even in a few instances. But I think there is no absurdity in explaining the tropical or figurative[453] nature of that language employed in speaking of “hardening,” according to common usage. For those masters who are remarkable for kindness to their slaves, are frequently accustomed to say to the latter, when, through much patience and indulgence on their part, they have become insolent and worthless: “It is I that have made you what you are; I have spoiled you; it is my endurance that has made you good for nothing: I am to blame for your perverse and wicked habits, because I do not have you immediately punished for every delinquency according to your deserts.” For we must first attend to the tropical or figurative meaning of the language, and so come to see the force of the expression, and not find fault with the word, whose inner meaning we do not ascertain. Finally, the Apostle Paul, evidently treating of such, says to him who remained in his sins: “Despisest thou the riches of His goodness, and forbearance, and long-suffering; not knowing that the goodness of God leadeth thee to repentance? but, after thy hardness and impenitent heart, treasurest up unto thyself wrath on the day of wrath and revelation of the righteous judgment of God.”[454] Such are the words of the apostle to him who is in his sins. Let us apply these very