There's a Kagyu story about a Lama and his three students. The Lama was kind hearted and knowledgeable but not Enlightened. All his claims of normalcy were ignored by his students as modesty, who practiced seeing him as Enlightened and thus quickly surpassed their teacher and gained Enlightenment. Whereupon they saw their guru as a ordinary human and became his gurus.
"Neu-sur-ba said: You must see any affliction as an enemy and attack it as soon as it arises in your mind. Otherwise, if you acquiesce when it first appears, and then nurture it with improper thoughts, you will have no way to defeat it, and it will conquer you in the end.”
-Lam Rim Chen Mo eng v01 pg. 348 tib pg. 275