you good for the sake of your fathers." Rabbi Hama ben Hanina taught that the "man" who wrestled with Jacob in was Esau's guardian angel, and that Jacob alluded to this when he told Esau in , "Forasmuch as I have seen your face, as one sees the face of Elohim, and you were pleased with me." Rabbi Samuel bar Nahmani taught that Jacob's adversary appeared to Jacob as an idol worshiper, and the Master has said in a Baraita that if an Israelite is joined by a heathen on the way, the Israelite should let the heathen walk on the right (so that the Israelite can keep the right hand nearest to the idol worshiper, so as to more easily defend against a sudden attack. Jacob must have done so, as his attacker injured the thigh that was nearest to him, the right thigh). Rav Samuel bar Aha said in the name of Rava bar Ulla in the presence of Rav Papa that the attacker appeared to Jacob as one of the wise, and the Master (Rav Judah) said whoever walks at the right hand of his teacher is uncultured. (According to this view, Jacob regarded the other as a scholar and took his place at the other's left hand and so was injured in his right thigh, the side nearest to the other.) And the Rabbis said that he came from behind and dislocated both of Jacob's thighs. The Rabbis interpret , "As he wrestled with him," like Rabbi Joshua ben Levi, who said teaches that the combatants threw up the dust of their feet to the Throne of Glory, for says, "As he wrestled (, ) with him," and says, "And, the clouds are the dust (, ) of his feet." Reading , "And there wrestled a man with him until the breaking of the day," Rabbi Isaac deduced that a scholar should not go out alone at night (for the man assaulted Jacob only during the night, and departed with the break of day). A Midrash taught that an angel attacked Jacob in because Jacob had failed to fulfill his vow to God. The Rabbis taught that Providence examines one's record of deeds on three occasions: (1) if one goes on a journey alone, (2) if one sits in an unstable house, and (3) if one vows and does not fulfill one's vow. The Midrash taught