After Cain arrived in the Land of Nod, to which he was banished by God as his punishment for murdering his own brother Abel, his wife became pregnant and bore Cain's first child, whom he named Enoch.
After the birth of Enoch, the Hebrew text of Genesis 4:17 is unclear. Either Cain built a city and named it after the mighty Enoch, or else Enoch built a city.[1] In the King James Bible, the text makes it clear that Cain built the city and named it after his son.