True, at times they may be held responsible for not having...
True, at times they may be held responsible for not having acquired education, and this could be an argument against them. However, if there are cases where they have no responsibility, that is in issues which require the study of books and proper instruction under teachers. One who has never had any teacher and has never gone to school is not held responsible in such matters. However, there are issues which a normal human being can understand with his natural faculty of a sound mind.
Here it is not necessary for one to have gone to the school, to have read books and have had teachers. In other words, it does [not] require one to have a diploma or a degree or even to have received middle-school education. All that is needed is sanity and a sound mind. Thereafter, the Imam gives an example. Suppose there is an 'alim who preaches the people to be pious and Godfearing while he himself acts in a manner contrary to piety and Godfearing.
He preaches what he himself does not practice and the people observe this contradiction between his word and deed. The Imam points out that it is not necessary for one to be educated and learned in order to see that such men are not worthy of being followed. The common people among the Jews would observe these things with their own eyes and understand them with their minds (wadtarru bi ma'arifi qulubihim).
[1] With their natural intelligence they could perceive that one must not follow such persons, but in spite of that they would follow them. Therefore they were responsible and guilty. There are some matters that do not require any education or training or any linguistic expertise in any particular language such as Arabic or Persian or any training in any of such subjects as grammar, law, jurisprudence, logic or philosophy.
All that is needed is the natural gift of intelligence and they (the common people among the Jews) did possess this. They perceived these things with their natural intelligence. The Noble Prophet (s) has a saying which is one of the profoundest because of its innate self-evident character. He said: The value of works depends solely on intentions, and everyone's recompense depends on his intentions. [2] It means that the significance and worth of one's actions depends on one's intentions.
If you do something unintentionally you are not guilty if it is something bad and if it is something good you do not deserve any reward.