There are those who question why it is necessary to have an intermediary interceding on our behalf before G-d. The person with this question is a learned man, a Torah scholar, etc. He is great enough – he claims – to negotiate his relationship with G-d without an intermediary. He doesn’t need a Rebbe! * Nadav and Avihu, of course, were extremely great, having attained the loftiest spiritual heights, but since “they taught Torah law in the presence of Moshe, their master,” they were severely punished –on account of their lack of proper deference to their master.