The document discusses which son of Abraham was sacrificed - Ishmael or Isaac. It provides biblical context about Abraham's family and the births of Ishmael and Isaac. It argues that Ishmael was the one sacrificed based on details in Genesis that portray Ishmael as a baby when he and Hagar left, and Ishmael being referred to as Abraham's "only son" in Genesis 22. The Quran is also cited as confirming it was Ishmael who was sacrificed.