John Calvin's Commentary on the Bible - Hebrews 11:8
Verse 8 8.By faith Abraham, etc. He comes now to Abraham, who is the chief father of God’s church on earth, and in whose name the Jews gloried, as though by the distinction of being the holy race of Abraham alone, they were removed from the common order of men. But he now reminds them of what they ought to possess as the main thing, that they might be counted among his children. He therefore calls their attention to faith, for Abraham himself had no excellency which did not proceed from faith. ... read more
Adam Clarke's Commentary on the Bible - Hebrews 11:11
Through faith also Sara - Her history, as far as the event here is concerned, may be seen Genesis 17:19 , and Genesis 21:2 . Sarah at first treated the Divine message with ridicule, judging it to be absolutely impossible, not knowing then that it was from God; and this her age and circumstances justified, for, humanly speaking, such an event was impossible: but, when she knew that it was God who said this, it does not appear that she doubted any more, but implicitly believed that what... read more