"...there is a moral basis to the knowledge of God....To learn something of God's will and to use such knowledge to live a life worthy of the Master and utterly pleasing to him, is to engage in the business of obedience. But as you get busy in the business of obedience, you get to know God better. That in turn impels you to more obedience, which in turn opens up new vistas in the knowledge of God and his will. Of course, as your knowledge of God and his will improves, you are driven to greater obedience. Such obedience is one point of access to greater knowledge of God; and on, and on, and on...."
This mutually beneficial relationship of the two almost makes you dizzy thinking about it; but Carson's point is insightful. More knowledge of God and His will leads to further (and greater depths of) obedience and that in turn leads to a richer understanding of our great God.
With all of this in mind, let's pray as the apostle Paul prayed "...asking that [we] may be filled with the knowledge of his will in all spiritual wisdom and understanding, so as to walk in a manner worthy of the Lord, fully pleasing to him, bearing fruit in every good work and increasing in the knowledge of God." (Col. 1:9-10)