Gevurot 20:29-31

Orthodox Jewish Bible

²⁹ "I have da’as that after my departure savage ze’evim (wolves) will come in among you, not sparing the eder (flock). [YECHEZKEL 34:5]

³⁰ "And from you yourselves will rise up anashim speaking perverted doctrines in order to draw away talmidim after themselves.

³¹ "Therefore, be shomer, remembering that for shloshah shanim, yomam v’lailah, I did not stop admonishing each one of you with tears.