15. Let us now look at those passages of Ezekiel where he says, “I will take away from them their stony heart, and I will put in them a heart of flesh, that they may walk in My statutes, and keep Mine ordinances. For if God, when He pleases, takes away a heart of stone and bestows a heart of flesh, that His ordinances may be observed and His commandments may be obeyed, it will then appear that it is not in our power to put away wickedness. For the taking away of a stony heart seems to be nothing else than the removal of the wickedness by which one is hardened, from whomsoever God pleases to remove it. Nor is the bestowal of a heart of flesh, that the precepts of God may be observed and His commandments obeyed, any other thing than a man becoming obedient, and no longer resisting the truth, but performing works of virtue. If, then, God promises to do this, and if, before He takes away the stony heart, we are unable to remove it from ourselves, it follows that it is not in our power, but in God’s only, to cast away wickedness. And again, if it is not our doing to form within us a heart of flesh, but the work of God alone, it will not be in our power to live virtuously, but it will in everything appear to be a work of divine grace. Such are the assertions of those who wish to prove from the authority of Holy Scripture that nothing lies in our own power. Now to these we answer, that these passages are not to be so understood, but in the following manner. Take the case of one who was ignorant and untaught, and who, feeling the disgrace of his ignorance, should, driven either by an exhortation from some person, or incited by a desire to emulate other wise men, hand himself over to one by whom he is assured that he will be carefully trained and competently instructed. If he, then, who had formerly hardened himself in ignorance, yield himself, as we have said, with full purpose of mind to a master, and promise to obey him in all things, the master, on seeing clearly the resolute nature of his determination, will appropriately promise to take away all ignorance, and to implant knowledge within his mind; not that he undertakes to do this if the disciple refuse or resist his efforts, but only on his offering and binding himself to obedience in all things. So also the Word of God promises to those who draw near to Him, that He will take away their stony heart, not indeed from those who do not listen to His word, but from those who receive the precepts of His teaching; as in the Gospels we find the sick approaching the Saviour, asking to receive health, and thus at last be cured. And in order that the blind might be healed and regain their sight, their part consisted in making supplication to the Saviour, and in believing that their cure could be effected by Him; while His part, on the other hand, lay in restoring to them the power of vision. And in this way also does the Word of God promise to bestow instruction by taking away the stony heart, i.e., by the removal of wickedness, that so men may be able to walk in the divine precepts, and observe the commandments of the law.