By faith Abraham, when he was tested, offered up Isaac, and he who had received the promises was in the act of offering up his only son,
17. By faith Abraham, etc. He proceeds with the history of Abraham, and relates the offering up of his son; and it was a singular instance of firmness, so that there is hardly another like it to be found. Hence for the sake of enhancing it, he adds, when he was tempted, or tried.
Abel is our first pattern of faith at work: he offered a sacrifice acceptable to God while his brother's was rejected. By faith he was commended as righteous, and though he died long ago, his faith still speaks.
AI summary
Commenting on Hebrews 11:4-31
Of whom it is said,.... That is, of Isaac, Abraham's own son, whom he offered up; or rather, "to whom it was said", as the Vulgate Latin and Syriac versions render it; that is, to Abraham, for to him was this said, Gen 21:12 that in Isaac shall thy seed be called; that numerous natural seed of his, which should inherit the land of Canaan...