Musar su Genesi 44:15

Before this will occur, the משיח בן יוסף the natural enemy of Esau will come forth and will complete his task of liberating Israel from the serpent's pollutants just as he had begun to do when he had been given the mission to be "a father to Pharaoh" in the land that is known as ערות הארץ, "the naked part of the earth." Then the Messiah, who has his roots in the נחש (Yishai) can come forth as a צפע (as described on page 309 based on Isaiah 14,29. When Joseph's butler told the brothers that his master had said נחש ינחש איש אשר כמוני in 44,5, he alluded to the process of defeating the serpent at its own game; his master would be able to parry and subdue the negative forces from where they had emanated.