Genesis 4:13-17

Cain said to YAHWEH, “My punishment is more than I can bear! Look—you’ve thrown me off the land today, and now I must hide from your presence. As a fugitive and wanderer on the earth, anyone who meets me may choose to kill me!” YAHWEH responded, “Not so! If anyone kills you, I promise the seven-fold vengeance of Cain will be released upon him!” So, YAHWEH put an identifying sign on Cain as a warning so that no one would dare kill him. Then Cain left the presence of YAHWEH and journeyed to the Land of Wandering, east of Eden. Cain slept with his wife and she conceived and bore Enoch. Cain was building a city at the time, so he named it the Village of Enoch, after his son.