Hasan: The answer to this question can be condensed in two points:

First, they did favor some with this and kept it away from others due to disparity in their comprehension, as some can take their knowledge upon themselves and some others cannot because it could causes confusion and uncertainty into their faith.

That is why it is reported from Amir Al-Mu’menin (PBUH) that he says: “By God if I would want to, I could tell every one of you about their intentions and all their affairs, but I am afraid they accuse me with infidelity and alter from the religion of the Messenger of Allah (PBUH); thus, I am only to utter it to people of distinction who can be trusted and whom are sent in truth and chosen among all. I speak nothing but the truth as I am entrusted with it: the way they die and the way they survive and everything else. There is nothing He has not spelled into my ear or uttered upon me”.

This Hadith clearly states what we were talking about.

Anwar: Yes, it is very clear.