Iamblichus' Life of Pythagoras

...towards him. Observing that there was something in the youth’s modesty that exceeded human nature, they recalled how unexpectedly he had appeared to them upon their landing. He had descended from the summit of Mount Carmel—which they knew was more sacred than other mountains and inaccessible to the common people—without looking back or being delayed by the steep cliffs or opposing rocks. When he reached the boat, he said nothing more than, "Are you bound for Egypt?" Upon their affirmative answer, he boarded the ship and sat in silence for the duration of the voyage in a part of the vessel where he would not hinder the sailors' work. Pythagoras remained in the same unmoved state for two nights and three days, neither eating, drinking, nor sleeping—unless, perhaps, he slept briefly while sitting in that firm and tranquil state, unnoticed by the crew. Furthermore, when the sailors considered how their voyage had continued uninterrupted, contrary to their expectations, as if some deity were present, they concluded that a divine being had truly crossed over with them from Syria to Egypt. Hence, speaking to Pythagoras and to each other with greater respect and gentleness than before, they completed the remainder of their voyage through a calm sea and at length landed safely on the Egyptian coast. There, the sailors reverently helped him descend from the ship. After placing him on the purest sand, they raised a temporary altar and heaped upon it the fruits of trees from their own stores, presenting him with the first fruits of their cargo before departing in haste to their destination. Pythagoras, whose body was weakened by such a long fast...