Fr. John Behr notes that St Irenaeus of Lyons sees in the healing of the man born blind (John 9), Christ by whom all things were made, bringing to completion that which was lacking in this creature – his eyes were unformed. Jesus shows Himself to be the Creator in giving sight to the blind man by recreating His eyes.
“That this is indeed the work of God is shown, for Irenaeus, by the manner in which Christ healed the man blind from birth (John 9). It was not merely by a word that he was healed, but ‘by an outward action, doing this not without purpose or by chance, but that he might show forth the Hand of God that had at the beginning moulded the human being’ (haer. 5.15.2). So, just as ‘the Lord took mud from the earth and formed the human being’ (Gen. 2:7), Christ spat on the ground and made mud, smeared it upon his eyes, ‘pointing out the original fashioning, how it was effected, and manifesting the Hand of God to those who can understand by what [Hand] the human being was formed out of the dust’ (haer. 5.15.2). As, in Christ’s words, the man was born blind not because of his own sin or that of his parents, ‘but that the works of God should be manifest in him’ (John 9:3), so Irenaeus sets this particular work within the intentionality of the economy as a whole:
‘For that which the artificer, the Word, had omitted to form in the womb, he then supplied in public that the works of God might be manifested in him, in order that we might not seek out another hand by which the human being is fashioned, nor another Father, knowing that this Hand of God which formed us in the beginning, and which does form us in the womb, has in the last times sought us out who were lost, winning us back to his own, and taking up the lost sheep upon his shoulders, and with joy, restoring it to the fold of life. (haer. 5.15.2; cf. Luke 19:10, 15:4-6).’
If all of this was done so that ‘the works of God should be manifest in him’, Irenaus concludes that ‘the work of God is fashioning the human being’. (Irenaeus of Lyons: Identifying Christianity, pp. 162-163