Our heads learn faster than our hearts, and that means danger.
Just because you can communicate an idea does not mean you have submitted yourself to it. And if we are not careful, we will mistake the communication part as the barometer of our maturity.
Paul Tripp calls it “academizing” the faith — when we define our spiritual growth by our biblical literacy. But as he warns, “You can be theologically astute and be dramatically spiritually immature.”