Cain knew his wife intimately, and she conceived and gave birth to Enoch. Then Cain became the builder of a city, and he named the city Enoch after his son.
References for Genesis 4:17
Irad was born to Enoch, Irad fathered Mehujael, Mehujael fathered Methushael, and Methushael fathered Lamech.
Lamech took two wives for himself, one named Adah and the other named Zillah.
Adah bore Jabal; he was the father of the nomadic herdsmen.
References for Genesis 4:20
His brother was named Jubal; he was the father of all who play the lyre and the flute.
Zillah bore Tubal-cain, who made all kinds of bronze and iron tools. Tubal-cain's sister was Naamah.
Lamech said to his wives: Adah and Zillah, hear my voice; wives of Lamech, pay attention to my words. For I killed a man for wounding me, a boy for striking me.
If Cain is to be avenged seven times over, then for Lamech it will be seventy-seven times!
Adam knew his wife intimately again, and she gave birth to a son and named him Seth, for [she said,] "God has given me another child in place of Abel, since Cain killed him."
References for Genesis 4:25
A son was born to Seth also, and he named him Enosh. At that time people began to call on the name of the Lord.
References for Genesis 4:26