51. Nor do the words, ‘Thou hast loved righteousness and hated iniquity,’ which are added in the Psalm, show, as again you suppose, that the Nature of the Word is alterable, but rather by their very force signify His unalterableness. For since of things originate the nature is alterable, and the one portion had transgressed and the other disobeyed, as has been said, and it is not certain how they will act, but it often happens that he who is now good afterwards alters and becomes different, so that one who was but now righteous, soon is found unrighteous, wherefore there was here also need of one unalterable, that men might have the immutability of the righteousness of the Word as an image and type for virtue. And this thought commends itself strongly to the right-minded. For since the first man Adam altered, and through sin death came into the world, therefore it became the second Adam to be unalterable; that, should the Serpent again assault, even the Serpent’s deceit might be baffled, and, the Lord being unalterable and unchangeable, the Serpent might become powerless in his assault against all. For as when Adam had transgressed, his sin reached unto all men, so, when the Lord had become man and had overthrown the Serpent, that so great strength of His is to extend through all men, so that each of us may say, ‘For we are not ignorant of his devices.’ Good reason then that the Lord, who ever is in nature unalterable, loving righteousness and hating iniquity, should be anointed and Himself sent, that, He, being and remaining the same, by taking this alterable flesh, ‘might condemn sin in it,’ and might secure its freedom, and its ability henceforth ‘to fulfil the righteousness of the law’ in itself, so as to be able to say, ‘But we are not in the flesh but in the Spirit, if so be that the Spirit of God dwelleth in us.’