Of whom it was said, That in Isaac shall thy seed be called:
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
Accounting that God was able to raise him up, even from the dead,.... Abraham did not go about this affair without thought; and yet he did not consult with flesh and blood; his reasoning was the reasoning of faith; and the conclusion of it was, not that he believed that God would raise his son from the dead, but that he was able to do it.
Verse 18. Of whom it was said, That in Isaac shall thy seed be called. . A numerous posterity had been promised to him. It was there said expressly that this promise was not to be fulfilled through the son of Abraham by the bond-woman Hagar, but through Isaac.