What are main obstacles on the way to understanding Quranic interpretation from Imam’s views?

One of the obstacles towards understand the Quran is to induct the idea that in order to understand the Quran, one has to be a commentator of the Quran while taking moral, ethical and mystic benefit from the Quranic verses is nothing to do with tafseer (interpretation) and hence ordinary people should also be encouraged to pay attention to the ethical and moral aspects of the stories mentioned in the Quran.

Obstacles towards Understanding the Quran in the View of Imam Khomeini