Abel is the second son of Adam and Eve and the younger brother of Cain. In the biblical account, Cain murders Abel after Yahweh rejects Cain's sacrifice of grain and accepts Abel's sacrifice of an animal from his flocks.

Ronald S. Hendel, "Cain and Abel," The Oxford Companion to the Bible, ed. by Bruce M. Metzger and Michael D. Coogan (New York: Oxford University Press, 1993), 97; Genesis 2-4.