His revengeful anger when he found how he had been supplanted, made Jacob flee to his mother's family in Mesopotamia, and there dwell for many years, ere returning to Canaan with his large household, there to live in the manner that had been ordained for the first heirs of the promise. Esau went away to Mount Seir, to the south of the Promised Land, and his descendants were called the Edomites, from his name, meaning the Red; and so, too, the sea which washed their shores, took the name of the Sea of Edom, or the Red Sea. They were also named Kenites from his son Kenaz. Their country, afterwards called Idumea, was full of rocks and precipices, and in these the Edomites hollowed out caves for themselves, making them most beautiful, with pillars supporting the roof within, and finely-carved entrances, cut with borders, flowers, and scrolls, so lasting that the cities of Bosra and Petra are still a wonder to travellers, though they have been empty and deserted for centuries past. The Edomites did not at once lose the knowledge of the true God; indeed, as many believe, of them was born the prophet Job, whom Satan was permitted to try with every trouble he could conjure up, so that his friends believed that such sufferings could only be brought on him for some great sin; whereas he still maintained that the ways of God were hidden, and gave utterance to one of the clearest ancient prophecies of the Redeemer and the Resurrection. At length God answered him from the whirlwind, and proclaimed His greatness through His unsearchable works; and Job, for his patience in the time of adversity, was restored to far more than his former prosperity.