Job 14:4

You see Job taking refuge again in his nature, because it is impossible, he says, to be pure. [He implores God] not only because of our weakness or our ephemeral nature or the disheartening that fills our life, but because it is also impossible to be pure. "Stay away from me, so that I may be peaceful and satisfied about my life like a laborer." Job expresses again the ephemeral, miserable and unhappy character of life. "And since I am overwhelmed and unhappy, I ask only to be left in peace." Then Job demonstrates that human beings are the unhappiest of all, more than trees, rivers and the sea.

Let us be imitators also of those who in goat-skins and sheep-skins went about proclaiming the coming of Christ; I mean Elijah, Elisha, and Ezekiel among the prophets, with those others to whom a like testimony is borne [in Scripture]. Abraham was specially honoured, and was called the friend of God; yet he, earnestly regarding the glory of God, humbly declared, "I am but dust and ashes." Moreover, it is thus written of Job, "Job was a righteous man, and blameless, truthful, God-fearing, and one that kept himself from all evil." But bringing an accusation against himself, he said, "No man is free from defilement, even if his life be but of one day." Moses was called faithful in all God's house; and through his instrumentality, God punished Egypt with plagues and tortures. Yet he, though thus greatly honoured, did not adopt lofty language, but said, when the divine oracle came to him out of the bush, "Who am I, that Thou sendest me? I am a man of a feeble voice and a slow tongue." And again he said, "I am but as the smoke of a pot."

Who can make clean a thing conceived of unclean seed? Is it not Thou, Who only Art? He That alone is clean in Himself can cleanse the unclean thing. For man, who lives in a corruptible flesh, has the uncleannesses of temptation engrained in him, seeing that he derived them from his birth. For his very conception, for the sake of fleshly gratification, is uncleanness. Hence the Psalmist saith, Behold, I was shapen in wickedness, and in sin hath my mother conceived me. Hence it is therefore that he is very often tempted even against his will. Hence it is that he is subject to impurities in imagination, even though he strive against them by reason, because being conceived in uncleanness, whilst he follows after cleanness, he is striving to get the better of that which he is. But whoever has mastered the motions of secret temptation, and overcome uncleanness of thought, must never ascribe his cleanness to himself, in that none can make clean a thing conceived of unclean seed, save He Who alone is clean in Himself. Let him, then, that has already reached in mind the place of cleanness, cast his eye upon the way of his conception, which he came by, and thence satisfy himself, that in his own power he has no cleanness of life, the beginning of whose existence was made in uncleanness. But the meaning here may be that blessed Job, regarding the Incarnation of the Redeemer, saw that That Man only in the world was not conceived of unclean seed, Who so came into the world from the Virgin's womb, that He had nothing derived from unclean conception. For He did not proceed from the man and the woman, but from the Holy Spirit and the Virgin Mary. He only then proved truly clean in His Flesh, Who was incapable of being affected by the gratification of the flesh, seeing that it was not by the gratification of the flesh that He came hither.