Response to @johnnykeys342: "The 1st people were Adam & Eve", They had 2 sons Cane & Abel", Cane & Abel Married Wives for themselves", How can this be? I win!"
"Well, you're half-right. Cain actually murdered his brother Abel in a fit of rageful jealousy after the sacrifices of Abel, who was a shepherd, were praised, and the sacrifices of Cain, who was a farmer, were rejected. The Islamic interpretation suggests that Cain and Abel were offering competing sacrifices to win the hand of their sister Aclima. Eve eventually had another son named Seth who became the progenitor of the lineage that led to Jesus's adoptive father, Joseph. After murdering his brother, Cain fled to the land of Nod, where he married a woman. So unless other humans were created in addition to Adam and Eve and never mentioned, the woman that Cain married would have been his sister."