신명기 1:13의 Musar

The general principle in the matter: Rabbanut is nothing but a heavy burden on the shoulders of its bearer. For as long as a man is sitting alone in his house, merely a part of humanity, he is held accountable only for himself. But once he assumed a position of Rabbanut and dominion, already he is held accountable for every person under his authority because it is incumbent on him to watch over all of them, pasture them with knowledge and understanding, and straighten their deeds. If he does not do so, our sages declared - "their sins are inscribed on your head"(Midrash Devarim Rabba 1:13).

And our sages, of blessed memory, said "a sign of arrogance is poverty of Torah" (Sanhedrin 24a). And likewise they said: "a sign of not knowing anything is self-praise" (Zohar Balak 49b); and "one coin in a pitcher cries out 'rattle, rattle'" (Bava Metzia 85b); and "the barren trees were asked: 'why are your voices heard?' they replied: 'would that it were that our voices will be heard and we will be remembered'" (Bereishis Raba 16:3).

Another of the detriments of humility is associating with or being served by flatterers, who try to steal a person's heart with their flattery in order to benefit themselves. They will praise and exalt him by exaggerating to the extreme whatever virtues he possesses and by adding to this, virtues he does not at all possess. Sometimes what he does possess is the very opposite of what they praise him for.