Here are some stimulating reflections by John Frame on what comes first, knowledge of God or knowledge of the self?
"On the first page of his Institutes, Calvin observes that the knowledge of God and the knowledge of self are interrelated. We might expect Calvin (as a good Calvinist!) to add to that of course of course of the two, the knowledge of God "comes first". remarkable, however, Calvin says instead that he doesn't know which comes first. This comment I take to be enormously perceptive. The best way to look at the matter is that neither knowledge of God or knowledge of self is possible without the other, and growth in one area is always accompanied by growth in the other. I cannot know myself rightly until I see myself as God's image: fallen, yet saved by grace. But also I cannot know myself rightly until I seek to know Him as a creature, as a servant. The two kinds of knowledge, then, come simultaneously, and they grow together. The reason for this is not only that each of us is part of the "situation" that is essential to the knowledge of God but also the additional fact that each of us is made in God's image. We know God as He is reflected in ourselves. Furthermore, all the information we receive about God, through nature, Scripture, or whatever source, comes to us through our eyes, ears, minds and brains - through ourselves. Sometimes we dream fondly of a "purely objective" knowledge of God - a knowledge freed from the limitations of our senses, minds, experience, preparation, and so forth. But nothing of this sort is possible, and God does not demand that of us. Rather, He condescends to dwell in and with us, as in a temple. he identifies himself in and through our thoughts, ideas and experiences. And that identification is clear; it is adequate for Christian certainty. A "purely objective" knowledge is precisely what we don't want! Such knowledge would presuppose a denial of our creaturehood and thus a denial of God and all truth." (From The Doctrine of the Knowledge of God, John M. Frame, P&R, 1987, p. 65-65).