Cain appears in the Book of Genesis in the Old Testament as the firstborn son of Adam and Eve and the elder brother of Abel. The biblical account recounts a dispute that ends with Cain killing Abel, an event traditionally regarded as the first murder in the sacred narrative. This episode is a brief but influential passage that has shaped moral, theological and literary discussion for millennia. See the Old Testament and the wider Bible for the primary text and context, and the family origin of Adam and Eve and Abel.

Biblical narrative

In Genesis the conflict begins with offerings: Cain brings produce from the ground while Abel offers the firstlings of his flock. God is said to regard Abel’s offering more favorably, and Cain becomes angry. In the ensuing confrontation Cain kills Abel. God confronts Cain, pronounces a curse and a punishment of wandering, and sets a protective sign—commonly called the "mark of Cain"—to prevent others from killing him. Cain then departs to the land of Nod and, according to Genesis, fathers descendants and is associated with the founding of a city named after his son Enoch.

Interpretations and traditions

Scholars and religious traditions have read the story in multiple ways: as a moral lesson against envy and violence, as an etiological tale explaining social divisions (settled agriculture versus shepherding), or as part of broader questions about divine justice. Later Jewish and Christian commentary explore why God accepted one offering over another and the nature of Cain’s sin. Some later folkloric and mystical sources depict Cain as influenced by a tempter figure (for example, in certain traditions named Samael and sometimes associated with names like Lucifer), though the biblical text itself does not identify an explicit satanic instigator.

Comparative and religious echoes

The Cain and Abel account appears indirectly across Abrahamic traditions. In Islamic narrative and popular commentary the two brothers are often called Qabil and Habil and the episode is used to teach about jealousy, responsibility and repentance. Rabbinic literature and patristic writings expand the brief Genesis account with moralizing details and genealogical reflections, demonstrating how a short canonical story was amplified in later religious imagination.

Legacy and cultural influence

The image of Cain has been influential in art, literature and language. "The mark of Cain" has become a metaphor for stigma or guilt; the story has been invoked in works from medieval exegesis to modern novels and paintings. Creators and commentators have used the figure to explore themes such as fraternal rivalry, culpability, exile, and the social consequences of violence.

Notable points and distinctions

  • Cain is traditionally regarded as the first murderer recorded in the biblical narrative.
  • The text leaves some questions open—why one offering was favored and the precise nature of the "mark"—which has encouraged varied interpretations.
  • The account functions both as family history in Genesis and as a moral and theological touchstone reused across cultures.

For primary-text study consult the relevant chapters in Genesis and for commentary consult classical and modern exegesis; many resources summarize the story and its reception history in Judaism, Christianity and Islam. Additional online and print introductions are widely available for readers seeking more detailed analysis.