Augustine of Hippo

Elsewhere, too, he has even more plainly called it an image, while enforcing the same thing in other words. "Do you," he says, "putting off the old man with his deeds, put on the new man, which is renewed in the knowledge of God after the image of Him that created him." Where the one passage reads, "Put ye on the new man, which is created after God," the other has, "Put ye on the new man, which is renewed after the image of Him that created him." In the one place he says, "After God;" in the other, "After the image of Him that created him." But instead of saying, as in the former passages "In righteousness and true holiness," he has put in the latter, "In the knowledge of God." This renewal, then, and forming again of the mind, is wrought either after God, or after the image of God. But it is said to be after God, in order that it may not be supposed to be after another creature; and to be after the image of God, in order that this renewing may be understood to take place in that wherein is the image of God, i.e. in the mind.