[9] Then the LORD said to Cain, “Where is Abel your brother?” He said, “I do not know; am I my brother’s keeper?” [10] And the LORD said, “What have you done? The voice of your brother’s blood is crying to me from the ground. [11] And now you are cursed from the ground, which has opened its mouth to receive your brother’s blood from your hand. [12] When you work the ground, it shall no longer yield to you its strength. You shall be a fugitive and a wanderer on the earth.” [13] Cain said to the LORD, “My punishment is greater than I can bear. [14] Behold, you have driven me today away from the ground, and from your face I shall be hidden. I shall be a fugitive and a wanderer on the earth, and whoever finds me will kill me.” [15] Then the LORD said to him, “Not so! If anyone kills Cain, vengeance shall be taken on him sevenfold.” And the LORD put a mark on Cain, lest any who found him should attack him. [16] Then Cain went away from the presence of the LORD and settled in the land of Nod, east of Eden.

[17] Cain knew his wife, and she conceived and bore Enoch. When he built a city, he called the name of the city after the name of his son, Enoch. [18] To Enoch was born Irad, and Irad fathered Mehujael, and Mehujael fathered Methushael, and Methushael fathered Lamech. [19] And Lamech took two wives. The name of the one was Adah, and the name of the other Zillah. [20] Adah bore Jabal; he was the father of those who dwell in tents and have livestock. [21] His brother’s name was Jubal; he was the father of all those who play the lyre and pipe. [22] Zillah also bore Tubal-cain; he was the forger of all instruments of bronze and iron. The sister of Tubal-cain was Naamah.

[23] Lamech said to his wives:

“Adah and Zillah, hear my voice;

you wives of Lamech, listen to what I say:

I have killed a man for wounding me,

a young man for striking me.

[24] If Cain’s revenge is sevenfold,

then Lamech’s is seventy-sevenfold.”

[25] And Adam knew his wife again, and she bore a son and called his name Seth, for she said, “God has appointed for me another offspring instead of Abel, for Cain killed him.” [26] To Seth also a son was born, and he called his name Enosh. At that time people began to call upon the name of the LORD. (ESV)