God created us for this: to live our lives in a way that makes him look more like the greatness and the beauty and the infinite worth that he really is. This is what it means to be created in the image of God.
though the divine glory is displayed in man's outward appearance, it cannot be doubted that the proper seat of the image is in the soul.Institutes, Book 1 Chapter 15
With respect to fishes, birds, and beasts we read that God created them after their kind, that is, on a typical form of their own. Man, however, was not so created and much less after the type of an inferior creature. With respect to him God said, "Let us make man in our image"... the creation of man stands out as something distinctive.Systematic Theology, 183
man was made in the image and likeness of God in respect to his mind, by which he excels irrational creatures; in his image, however, according to memory, intelligence, and love; in his likeness according to innocence and justice, which are naturally in the rational mind.The Sentences, Book 2, Dist 16, Ch3