Then Abraham fell on his face, and laughed, and said in his heart, Shall a child be born to him that is a hundred years old? and shall Sarah, that is ninety years old, bear?
And after that came his brother out, and his hand took hold on Esau’s heel; and his name was called Jacob: and Isaac was sixty years old when she bore them.
And being not weak in faith, he did not consider his own body now dead, when he was about a hundred years old, neither yet the deadness of Sarah’s womb: