In other words, we discount things that aren't immediately beautiful to our personal tastes. We can tend to want everything to be immediate and automatic, and we cast off whatever doesn't instantly please. They can't see the beauty in the story, though it jumps out at those who love God. We also tend to think that if we're merely regenerate, then we can easily discern between what is beautiful and ugly. But wisdom always takes time and discipline and pruning.
Mining takes great labor and exercise.
Discerning beauty is like that. It often takes great effort to train ourselves to see profundity. Sometimes, though, even if we grasp the complex beauties at work in a piece of music, we get frustrated because of its level of difficulty. Yet here too we need patience and discipline. Reading English was once hard, but we overcame that.