Genesis 4:17-26 - The Line Of Cain
17 Later, Cain had sexual relations with his wife. She became pregnant and gave birth to Enoch. Cain founded a city and named it after his son Enoch. 18 Irad was born to Enoch. Irad fathered Mehujael, and Mehujael fathered Methushael, and Methushael fathered Lamech. 19 Later, Lamech married two wives. One was named Adah and the other was named Zillah. 20 Adah gave birth to Jabal, who became the ancestor of those who live in tents and herd livestock. 21 His brother was named Jubal; he became the ancestor of all those who play the lyre and the flute. 22 Zillah gave birth to Tubal-cain, who became a forger of bronze and iron work. Tubal-cain's sister was Naamah.
23 Lamech told his wives, "Adah and Zillah, listen to what I have to say: You wives of Lamech, hear what I'm announcing! I've killed a man for wounding me, a young man for bruising me. 24 For if Cain is being avenged seven times, then Lamech will be avenged 77 times."
25 Later on, after Adam had sexual relations with his wife, she gave birth to a son and named him Seth, because "God granted me another offspring to replace Abel, since Cain murdered him." 26 Seth also fathered a son, whom he named Enosh. At that time, profaning the name of the LORD began.