He Explains the Divine Image (Ver. 26) of the Renewal of the Mind
32 For behold, O Lord our God, our Creator, when our affections have been restrained from the love of the world, by which we died by living ill, and began to be a “living soul” by living well; and Your word which Thou spoke by Your apostle is made good in us, “Be not conformed to this world;” next also follows that which You presently subjoined, saying, “But be transformed by the renewing of your mind,” — not now after your kind, as if following your neighbour who went before you, nor as if living after the example of a better man (for You have not said, “Let man be made after his kind,” but, “Let us make man in our image, after our likeness”), that we may prove what Your will is.
For to this purpose said that dispenser of Yours—begetting children by the gospel, — that he might not always have them “babes,” whom he would feed on milk, and cherish as a nurse; “be transformed,” says He, “by the renewing of your mind, that he may prove what is that good, and acceptable, and perfect will of God.” Therefore You say not, “Let man be made,” but, “Let us make man.” Nor sayest Thou, “after his kind,” but, after “our image” and “likeness.” Because, being renewed in his mind, and beholding and apprehending Your truth, man needs not man as his director that he may imitate his kind; but by Your direction proves what is that good, and acceptable, and perfect will of Yours.
And Thou teachest him, now made capable, to perceive the Trinity of the Unity, and the Unity of the Trinity. And therefore this being said in the plural, “Let us make man,” it is yet subjoined in the singular, “and God made man;” and this being said in the plural, “after our likeness,” is subjoined in the singular, “after the image of God.” Thus is man renewed in the knowledge of God, after the image of Him that created him; and being made spiritual, he judges all things—all things that are to be judged,— “yet he himself is judged of no man.”
Source: Confessions (New Advent)