Then Cain's wife became pregnant and gave birth to a son, and they named him Enoch. When Cain founded a city, he named it Enoch after his son.
Enoch was the father of Irad. Irad was the father of Mehujael. Mehujael was the father of Methushael. Methushael was the father of Lamech.
References for Genesis 4:18
Lamech married two women -- Adah and Zillah.
Adah gave birth to a baby named Jabal. He became the first of the herdsmen who live in tents.
His brother's name was Jubal, the first musician -- the inventor of the harp and flute.
To Lamech's other wife, Zillah, was born Tubal-cain. He was the first to work with metal, forging instruments of bronze and iron. Tubal-cain had a sister named Naamah.
One day Lamech said to Adah and Zillah, "Listen to me, my wives. I have killed a youth who attacked and wounded me.
If anyone who kills Cain is to be punished seven times, anyone who takes revenge against me will be punished seventy-seven times!"
Adam slept with his wife again, and she gave birth to another son. She named him Seth, for she said, "God has granted me another son in place of Abel, the one Cain killed."
References for Genesis 4:25
When Seth grew up, he had a son and named him Enosh. It was during his lifetime that people first began to worship the LORD.