I once heard a learned man say, "Every evil has its remedy, except folly. To reprimand an obstinate fool or to preach to a dolt is like writing upon the water. Christ healed the blind, the halt, the palsied, and the leprous. But the fool He could not cure. "
If you want to interpret well and confidently, set Christ before you, for He is the man to whom it all applies, every bit of it.