King James Bible
"And Cain knew his wife; and she conceived, and bare Enoch: and he builded a city, and called the name of the city, after the name of his son, Enoch."
Following his exile from Eden's vicinity, Cain establishes a family line, with 'knew' being the biblical euphemism for sexual relations. The text doesn't identify his wife's origin, but she was likely a daughter of Adam and Eve, as early humanity required close intermarriage for population growth. Cain becomes civilization's first city-builder, a significant act for one condemned to be a wanderer. This urban development represents both human innovation and possibly an attempt to create security through community rather than trusting in God's protection. By naming the city after his son, Cain establishes a legacy and permanence that contrasts with his sentence of restlessness. This act of memorialization suggests a desire to root his lineage in a specific place despite his marked status.