Matthew Henry on Genesis 17:15-22
Here is, I. The promise made to Abraham of a son by Sarai, that son in whom the promise made to him should be fulfilled, that he should be the father of many nations; for she also shall be a mother of nations, and kings of people shall be of her, Gen 17:16. Note, 1. God reveals the purposes of his good-will to his people by degrees. God had told Abraham long before that he should have a son, but never till now that he should have a son by Sarai. 2. The blessing of the Lord makes fruitful, and adds no sorrow with it, no such sorrow as was in Hagar's case. "I will bless her with the blessing of fruitfulness, and then thou shalt have a son of her." 3. Civil government and order are a great bles…
Read the whole note in the consoleJamieson-Fausset-Brown on Genesis 17:18
O that Ishmael might live before thee--natural solicitude of a parent. But God's thoughts are not as man's thoughts [Isa 55:8].
Adam Clarke on Genesis 17:18
O that Ishmael might live before thee! - Abraham, finding that the covenant was to be established in another branch of his family, felt solicitous for his son Ishmael, whom he considered as necessarily excluded; on which God delivers that most remarkable prophecy which follows in Gen 17:20, and which contains an answer to the prayer and wish of Abraham: And as for Ishmael I have heard thee; so that the object of Abraham's prayer was, that his son Ishmael might be the head of a prosperous and potent people.
John Gill on Genesis 17:18
And Abraham said unto God,.... Being told he should have a son by Sarah, that should be his heir, he is concerned for Ishmael what would become of him; and who, being grown up, had doubtless a large share in his affections, and it is highly probable he began to think he was the promised seed, since he had lived to such an age, and had no other son, and Sarah was past bearing children: but now perceiving it would be otherwise, he puts up a petition for Ishmael, whom he did not neglect upon the promise of another, and to show his love to him, and regard for his welfare:
O that Ishmael might live before thee; he prays that his life might be preserved, and that it might be spent in the fear, wo…