Bring me a worm that can comprehend a man, and then I will show you a man that can comprehend the triune God.
God Is Wise, Incomprehensible School of Theology Series: Lecture 14
How God Is Both Incomprehensible and Knowable at the Same Time
This article explains the incomprehensibility of God, why he is incomprehensible, and the implications of this. It also explains that God is still knowable, and the implications thereof.
The Knowability of God
Can God be known? Knowing God is dependent on his revelation. This article discusses the relationship between God's revelation and his incomprehensibility. It concludes that knowing God is possible because God has revealed himself to us, so that we can know him—not exhaustively, but according to his perfect and wise counsel.