It was Isaac, or, as he is sometimes called, Elihu the son of Barachel, who revealed the wonderful mysteries of nature in his arguments with Job.
At the end of the years of famine, God appeared unto Isaac, and bade him return to Canaan. Isaac did as he was commanded, and he settled in Hebron. At this time he sent his younger son Jacob to the Bet ha-Midrash of Shem and Eber, to study the law of the Lord. Jacob remained there thirty-two years. As for Esau, he refused to learn, and he remained in the house of his father. The chase was his only occupation, and as he pursued beasts, so he pursued men, seeking to capture them with cunning and deceit.