Genesis 21:14

Birth of Isaac. - Jehovah did for Sarah what God had promised in Gen 17:6 (cf. Gen 18:14): she conceived, and at the time appointed bore a son to Abraham, when he was 100 years old. Abraham gave it the name of Jizchak (or Isaac), and circumcised it on the eighth day. The name for the promised son had been selected by God, in connection with Abraham's laughing (Gen 17:17 and Gen 17:19), to indicate the nature of his birth and existence. For as his laughing sprang from the contrast between the idea and the reality; so through a miracle of grace the birth of Isaac gave effect to this contrast between the promise of God and the pledge of its fulfilment on the one hand, and the incapacity of Abraham for begetting children, and of Sarah for bearing them, on the other; and through this name, Isaac was designated as the fruit of omnipotent grace working against and above the forces of nature. Sarah also, who had previously laughed with unbelief at the divine promise (Gen 18:12), found a reason in the now accomplished birth of the promised son for laughing with joyous amazement; so that she exclaimed, with evident allusion to his name, "A laughing hath God prepared for me; every one who hears it will laugh to me" (i.e., will rejoice with me, in amazement at the blessing of God which has come upon me even in my old age), and gave a fitting expression to the joy of her heart, in this inspired tristich (Gen 21:7): "Who would have said unto Abraham: Sarah is giving suck; for I have born a son to his old age." מלּל is the poetic word for דּבּר, and מי before the perfect has the sense of - whoever has said, which we should express as a subjunctive; cf. Kg2 20:9; Psa 11:3, etc.

Here is, I. The casting out of the bond-woman, and her son from the family of Abraham, Gen 21:14. Abraham's obedience to the divine command in this matter was speedy - early in the morning, we may suppose immediately after he had, in the night's visions, received orders to do this. It was also submissive; it was contrary to his judgment, at least to his own inclination, to do it; yet as soon as he perceives that it is the mind of God he makes no objections, but silently does as he is bidden, as one trained up to an implicit obedience. In sending them away without any attendants, on foot, and slenderly provided for, it is probable that he observed the directions given him. If Hagar and Ishmael had conducted themselves well in Abraham's family, they might have continued there; but they threw themselves out by their own pride and insolence, which were thus justly chastised. Note, By abusing our privileges we forfeit them. Those that know not when they are well off, in such a desirable place as Abraham's family, deserve to be cashiered, and to be made to know the worth of mercies by the want of them. II. Their wandering in the wilderness, missing their way to the place Abraham designed them for a settlement. 1. They were reduced to great distress there. Their provisions were spent, and Ishmael was sick. He that used to be full fed in Abraham's house, where he waxed fat and kicked, now fainted and sunk, when he was brought to short allowance. Hagar is in tears, and sufficiently mortified. Now she wishes for the crumbs she had wasted and made light of at her master's table. Like one under the power of the spirit of bondage, she despairs of relief, counts upon nothing but the death of the child (Gen 21:15, Gen 21:16), though God had told her, before he was born, that he should…

21:14-21 God again rescued Hagar in the wilderness and guaranteed her future (cp. 16:7-14). This passage is similar to ch 16, but the differences are great. Here, Hagar and Ishmael are rescued, but there is no commemorative naming. God’s earlier promise to Hagar is reiterated, but this time Hagar is not told to return to Sarah. The repeated motifs on the two occasions confirm God’s sovereign plan for Hagar and Ishmael. As Joseph later told Pharaoh, a twofold event demonstrated God’s confirmation (41:32). God did not abandon Hagar and Ishmael but met them in their despair (cp. 16:7), provided sustenance for them, and promised again that Ishmael would found a great nation (21:13; cp. 16:11-12). Paul uses this event in his letter to the Galatians to illustrate how God’s people must relinquish all that threatens the fulfillment of God’s promise (Gal 4:21-31).