John Gills Exposition of the Bible Commentary - Genesis 17:17
Then Abraham fell upon his face ,.... In reverence of the divine Being, and as amazed at what was told him: and laughed ; not through distrust and diffidence of the promise, as Sarah did, for he staggered not at that through unbelief, but for joy at such good news; and so Onkelos renders it, "and he rejoiced", with the joy of faith; it may be our Lord refers to this in John 8:56 ; he saw Christ in the promise of Isaac, and rejoiced that he should spring from his seed: the Targums of... read more
Matthew Henry's Complete Commentary - 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... read more