Prophet Abraham - 14:39 "Praise be to Allah who gave me Ishmael and Isaac in my old age. My Lord hears my prayers."
Why were Ishmael and Isaac given to Abraham in his old age?
Mary/19:41 Remember Abraham in the Book; he was a prophet, a truthful one.
Mary/19:42 "He said to his father, "My father, why do you serve that which does not hear or see or benefit you?"
Mary/19:43 My father, a knowledge has come to me which has not come to you. Follow me and I will guide you to a straight path.
Mary/19:44 My father, do not serve Satan. Satan has opposed the Most Merciful.
Mary/19:45 My father, I fear that you may be punished by the Most Merciful and that you may be a friend of Satan.
Mary/19:46 "(His father said:) "Are you turning away from my gods, Abraham? If you do not stop this, I will stone you, go away from me!"
Mary/19:47 "Peace be upon you,"he said, "I will beg my Lord for your forgiveness; He is most merciful to me."
Mary/19:48 I am leaving you and those whom you call upon besides Allah, I call upon my Lord, and I hope that I will not be unfortunate in calling upon my Lord.
Mary/19:49 When he left them and those whom he served besides Allah, We gave him (Abraham) Isaac and Jacob. We made them all prophets.

The Prophets/21:69 "We said: "O Fire, be cool and safe for Abraham"."
The Prophets/21:70 So they tried to devise a plan for him, but We doomed them to failure.
The Prophets/21:71 And We delivered him and Lot to the land which We had made sacred for all mankind.
The Prophets/21:72 We gave him (Abraham) Isaac and Jacob as a reward, and We made them all righteous.