Abraham had two sons; one named Ishmael, and the other Isaac. Though these brothers had the same father, they did not have the same mother; Ishmael was the son of Hagar, and Isaac the son of Sarah. As Ishmael was much older than his little brother, he ought to have been kind to him, and set a good example. But he did not love him and was so full of spite that he mocked his brother Isaac. Perhaps he called him ill names, because he knew it had been promised to his father that he should be the father of a great nation.