Cain is a biblical figure known as the firstborn son of Adam and Eve, appearing in the Book of Genesis. He is most famously recognized for committing the first murder by killing his younger brother Abel out of jealousy, as God favored Abel's offering over his own. Consequently, Cain was cursed by God and condemned to a life of wandering, marked with a sign to protect him from being killed. His story is often interpreted as a moral tale on the dangers of envy and the importance of responsibility for one's actions. Cain eventually settled in the land of Nod and is considered the progenitor of several descendants mentioned in the Bible.