קבלה אויף בראשית 32:25

R. Hizkiah asked: ‘If that was so, how came Jacob, as stated later, to be “left alone” (Gen. 32, 25)?’ Said R. Judah in reply: ‘Because he exposed himself deliberately to danger, and therefore the angels deserted him. It was to this that he alluded when he said: “I am not worthy of all the mercies and of all the truth which thou hast shown unto thy servant” (Ibid. 11).’

R. Eleazar said: ‘The sages have stated that on that night and at that hour the power of Esau was in the ascendant, and therefore Jacob was left alone, or, from another aspect, the sun was left alone, the light of the moon having been obscured. Nevertheless, the guardianship of Providence did not leave him entirely, so that his antagonist prevailed not against him, as it says: “And when he saw that he prevailed not against him…”.