2. Now in a little time Abraham had a son by Sarah, as God had foretold to him, whom he named Isaac, which signifies Laughter. And indeed they so called him, because Sarah laughed when God 25 said that she should bear a son, she not expecting such a thing, as being past the age of child-bearing, for she was ninety years old, and Abraham a hundred; so that this son was born to them both in the last year of each of those decimal numbers. And they circumcised him upon the eighth day and from that time the Jews continue the custom of circumcising their sons within that number of days. But as for the Arabians, they circumcise after the thirteenth year, because Ismael, the founder of their nation, who was born to Abraham of the concubine, was circumcised at that age; concerning whom I will presently give a particular account, with great exactness. 3. As for Sarah, she at first loved Ismael, who was born of her own handmaid Hagar, with an affection not inferior to that of her own son, for he was brought up in order to succeed in the government; but when she herself had borne Isaac, she was not willing that Ismael should be brought up with him, as being too old for him, and able to do him injuries when their father should be dead; she therefore persuaded Abraham to send him and his mother to some distant country. Now, at the first, he did not agree to what Sarah was so zealous for, and thought it an instance of the greatest barbarity, to send away a young child 26 and a woman unprovided of necessaries; but at length he agreed to it, because God was pleased with what Sarah had determined: so he delivered Ismael to his mother, as not yet able to go by himself; and commanded her to take a bottle of water, and a loaf of bread, and so to depart, and to take Necessity for her guide. But as soon as her necessary provisions failed, she found herself in an evil case; and when the water was almost spent, she laid the young child, who was ready to expire, under a fig-tree, and went on further, that so he might die while she was absent. But a Divine Angel came to her, and told her of a fountain hard by, and bid her take care, and bring up the child, because she should be very happy by the preservation of Ismael. She then took courage, upon the prospect of what was promised her, and, meeting with some shepherds, by their care she got clear of the distresses she had been in. 4. When the lad was grown up, he married a wife, by birth an Egyptian, from whence the mother was herself derived originally. Of this wife were born to Ismael twelve sons; Nabaioth, Kedar, Abdeel, Mabsam, Idumas, Masmaos, Masaos, Chodad, Theman, Jetur, Naphesus, Cadmas. These inhabited all the country from Euphrates to the Red Sea, and called it Nabatene. They are an Arabian nation, and name their tribes from these, both because of their own virtue, and because of the dignity of Abraham their father. CHAPTER 13. Concerning Isaac The Legitimate Son Of Abraham.