For this is the word of promise,
At this time will I come, and Sarah shall have a son.
All Commentaries on Romans 9:9 Go To Romans 9
George Leo Haydock
AD 1849
To prove that the children of Abraham are the children of the promise, he adduces the passage of Scripture: "I will come in a year's time, and Sara shall have a son. "(Genesis xviii.) This promised child was Isaac, the true son of the promise of God, and of the faith of Abraham; and not the son of the flesh, for Ismael was this as well as Isaac; but he was granted to the prayers of Abraham, a child of the grace and mercy of God. All the faithful, therefore, of whatever race or nation they may be, are in this sense the children of Abraham, by being gratuitously chosen by God, and by the fidelity in which they are imitators of Abraham. (Calmet)
