Thematic Bible: Who became a great nation

As to Ishmael, I have heard thee; lo, I have blessed him, and made him fruitful, and multiplied him, very exceedingly; twelve princes doth he beget, and I have made him become a great nation; Verse ConceptsAbraham, Family And DescendantsThe Number TwelveAbraham, Testing And VictoryAnswered PrayerProsperity PromisedGod Multipling PeopleTwelve BeingsBlessed By GodGod Paid Attention To MeSons Being A Blessingfruitfulness

And the lad groweth, and is weaned, and Abraham maketh a great banquet in the day of Isaac's being weaned; and Sarah seeth the son of Hagar the Egyptian, whom she hath borne to Abraham, mocking, and she saith to Abraham, 'Cast out this handmaid and her son; for the son of this handmaid hath no possession with my son -- with Isaac.' read more.
And the thing is very wrong in the eyes of Abraham, for his son's sake; and God saith unto Abraham, 'Let it not be wrong in thine eyes because of the youth, and because of thy handmaid: all that Sarah saith unto thee -- hearken to her voice, for in Isaac is a seed called to thee. As to the son of the handmaid also, for a nation I set him, because he is thy seed.'