36. Therefore the Image of the unalterable God must be unchangeable; for ‘Jesus Christ is the same yesterday, to-day, and for ever.’ And David in the Psalm says of Him, ‘Thou, Lord, in the beginning hast laid the foundation of the earth, and the heavens are the work of Thine hands. They shall perish, but Thou remainest; and they all shall wax old as doth a garment. And as a vesture shalt Thou fold them up, and they shall be changed, but Thou art the same, and Thy years shall not fail.’ And the Lord Himself says of Himself through the Prophet, ‘See now that I, even I am He,’ and ‘I change not.’ It may be said indeed that what is here signified relates to the Father; yet it suits the Son also to say this, specially because, when made man, He manifests His own identity and unalterableness to such as suppose that by reason of the flesh He is changed and become other than He was. More trustworthy are the saints, or rather the Lord, than the perversity of the irreligious. For Scripture, as in the above-cited passage of the Psalter, signifying under the name of heaven and earth, that the nature of all things originate and created is alterable and changeable, yet excepting the Son from these, shews us thereby that He is no wise a thing originate; nay teaches that He changes everything else, and is Himself not changed, in saying, ‘Thou art the same, and Thy years shall not fail.’ And with reason; for things originate, being from nothing, and not being before their origination, because, in truth, they come to be after not being, have a nature which is changeable; but the Son, being from the Father, and proper to His essence, is unchangeable and unalterable as the Father Himself. For it were sin to say that from that essence which is unalterable was begotten an alterable word and a changeable wisdom. For how is He longer the Word, if He be alterable? or can that be Wisdom which is changeable? unless perhaps, as accident in essence, so they would have it, viz. as in any particular essence, a certain grace and habit of virtue exists accidentally, which is called Word and Son and Wisdom, and admits of being taken from it and added to it. For they have often expressed this sentiment, but it is not the faith of Christians; as not declaring that He is truly Word and Son of God, or that the wisdom intended is true Wisdom. For what alters and changes, and has no stay in one and the same condition, how can that be true? whereas the Lord says, ‘I am the Truth.’ If then the Lord Himself speaks thus concerning Himself, and declares His unalterableness, and the Saints have learned and testify this, nay and our notions of God acknowledge it as religious, whence did these men of irreligion draw this novelty? From their heart as from a seat of corruption did they vomit it forth.