Genesis 16:15-16

"And Hagar bare Abram a son; and Abram called the name of his son, whom Hagar bare, Ishmael. And Abram was four score and six years old, when Hagar bare Ishmael to Abram."

The importance of this chapter in the history of the Chosen People is incalculable. Much of the future of Israel would be related to the Ishmaelites and the nations that came from them, much in the same manner as the Edomites entered the picture following the birth of Esau. The age of Abram is given here as 86, and it was not until 13 years later when he was 99 that God appeared to him again. During that long period, Abram would have to live with the situation that he and Sarai had brought upon themselves.