I. "He who is of the maid-servant is _after the flesh_; but he that is of the free-woman is through promise.... Just as then he that was _after the flesh_ persecuted him that was after the Spirit, so now" (vv. 23, 29). The Apostle sees in the different parentage of Abraham's sons the ground of a radical divergence of character. One was the child of nature, the other was the son of a spiritual faith. Ishmael was in truth the fruit of unbelief; his birth was due to a natural but impatient misreading of the promise. The patriarch's union with Hagar was ill-assorted and ill-advised. It brought its natural penalty by introducing an alien element into his family life. The low-bred insolence which the serving-woman, in the prospect of becoming a mother, showed toward the mistress to whom she owed her preferment, gave a foretaste of the unhappy consequences. The promise of posterity made to Abraham with a childless wife, was expressly designed to try his faith; and he had allowed it to be overborne by the reasonings of nature. It was no wonder that the son of the Egyptian slave, born under such conditions, proved to be of a lower type, and had to be finally excluded from the house. In Ishmael's relation to his father there was nothing but the ordinary play of human motives. "The son of the handmaid was born after the flesh." He was a _natural_ son. But Ishmael was not on that account cut off from the Divine mercies. Nor did his father's prayer, "O that Ishmael might live before Thee" (Gen. xvii. 18), remain unanswered. A great career was reserved by Divine Providence for his race. The Arabs, the fiery sons of the desert, through him claim descent from Abraham. They have carved their name deeply upon the history and the faith of the world. But sensuousness and lawlessness are everywhere the stamp of the Ishmaelite. With high gifts and some generous qualities, such as attracted to his eldest boy the love of Abraham, their fierce animal passion has been the curse of the sons of Hagar. Mohammedanism is a bastard Judaism; it is the religion of Abraham sensualised. Ishmael stands forth as the type of the carnal man. On outward grounds of flesh and blood he seeks inheritance in the kingdom of God; and with fleshly weapons passionately fights its battles.