“It is certainly true that our knowledge is finite. The agnostic has recognized that in some measure, though he illegitimately uses it for his own purposes. But the limitations of human knowledge are, we will see, very different from the kinds of limitations supposed by Hume, Kant and the positivists. For now, however, we should simply remind ourselves who the Lord is. Because He controls all things, God enters His world – our world – without being relativized by it, without losing His divinity. Thus in knowing our world, we know God. Because God is the supreme authority, the author of all the criteria by which we make judgments or come to conclusions, we know Him more certainly than we know any other fact about the world. And because God is the supremely present one, He is inescapable. God is not shut out by the world; He is not rendered incapable of revealing himself because of the finitude of the human mind. On the contrary, all reality reveals God. The agnostic argument, then, presupposes a nonbiblical concept of God. If God is who Scripture says He is, there are no barriers to knowing Him.”
John Frame, The Doctrine of the Knowledge of God, pp 19-20.