Simple answer: God is too big. We are too small. Even the greatest theologians and biblical scholars agree with this statement. We are not designed to "get it all," or "understand it all" in a moment. We are designed to seek God daily and get nuggets of truth daily. It is our daily food, because Christ is our daily meal.
So I pose one question: Have you eaten of Christ today? You don't have to gorge. He is delighted when we simply stop our activity and eat a simple meal. Jesus said,
“I am the bread of life;
whoever comes to me shall not hunger, and whoever believes in me shall never thirst.