7 Instead of the three proofs from Holy Scripture which you said would satisfy you if I could produce them, behold I have given you seven. Who, then, will put up with the follies of Origen? I will not use a severer word and so make myself like him or his followers, who presume at the peril of their soul to assert dogmatically whatever first comes into their head, and to dictate to God, whereas they ought either to pray to Him or to learn the truth from Him. For some of them say that the image of God which Adam had previously received was lost when he sinned.
Others surmise that the body which the Son of God was destined to take of Mary was the image of the Creator. Some identify this image with the soul, others with sensation, others with virtue. These make it baptism, those assert that it is in virtue of God's image that man exercises universal sway. Like drunkards in their cups, they ejaculate now this, now that, when they ought rather to have avoided so serious a risk, and to have obtained salvation by simple faith, not denying the words of God.
To God they ought to have left the sure and exact knowledge of His own gift, and of the particular way in which He has created men in His image and after His likeness. Forsaking this course, they have involved themselves in many subtle questions, and through these they have been plunged into the mire of sin. But we, dearly beloved, believe the words of the Lord, and know that God's image remains in all men, and we leave it to Him to know in what respect man is created in His image.
And let no one be deceived by that passage in the epistle of John, which some readers fail to understand, where he says: “Now are we the sons of God, and it does not yet appear what we shall be: but we know that, when He shall appear, we shall be like Him; for we shall see Him as He is.” For this refers to the glory which is then to be revealed to His saints; just as also in another place we read the words “from glory to glory,” of which glory the saints have even in this world received an earnest and a small portion.
At their head stands Moses, whose face shone exceedingly, and was bright with the brightness of the sun. Next to him comes Elijah, who was caught up into heaven in a chariot of fire, and did not feel the effects of the flame. Stephen, too, when he was being stoned, had the face of an angel visible to all. And this which we have verified in a few cases is to be understood of all, that what is written may be fulfilled. “Every one that sanctifies himself shall be numbered among the blessed.” For, “blessed are the pure in heart, for they shall see God.”
Source: Letters (New Advent)