Gen. 4 The man lay with his wife Eve, and she conceived and gave birth to Cain. She said, ‘With the help of the LORD I have brought a man into being.’ Afterwards she had another child, his brother Abel. Abel was a shepherd and Cain a tiller of the soil. The day came when Cain brought some of the produce of the soil as a gift to the LORD; and Abel brought some of the first-born of his flock, the fat portions of them. The LORD received Abel and his gift with favour; but Cain and his gift he did not receive. Cain was very angry and his face fell. Then the LORD said to Cain, ‘Why are you so angry and cast down?

If you do well, you are accepted;

If not, sin is a demon crouching at your door.

It shall be eager for you, and you will be mastered by it.

Cain said to his brother Abel, ‘Let us go into the open country.’ While they were there, Cain attacked his brother and murdered him. Then the LORD said unto Cain, ‘Where is your brother Abel?’ Cain answered, ‘I do not know.  Am I my brother’s keeper?’ The LORD said, ‘What have you done? Hark! Your brother’s blood that has been shed is crying out to me from the ground. Now you are accursed, and banished from the ground which has opened its mouth wide to receive your brother’s blood, which you have shed.  When you till the ground, it will no longer yield you its wealth. You shall be a vagrant and a wanderer on earth.’ Cain said to the LORD, ‘My punishment is heavier than I can bear; thou hast driven me today from the ground, and I must hide myself from thy presence. I shall be a vagrant and a wanderer on earth, and anyone who meets me can kill me.’ The LORD answered him, ‘No: if anyone kills Cain, Cain shall be avenged sevenfold.’ So the LORD put a mark on Cain, in order that anyone meeting him should not kill him. Then Cain went out from the LORD’s presence and settled in the land of Nod to the east of Eden.

Then Cain lay with his wife; and she conceived and bore Enoch. Cain was then building a city, which he named Enoch after his son.  Enoch begot Irad; Irad begot Mehujael; Mehujael begot Methushael; Methushael begot Lamech.

Lamech married two wives, one named Adah and the other Zillah. Adah bore Jabal who was the ancestor of herdsmen who live in tents; and his brother’s name was Jubal; he was the ancestor of those who play the harp and pipe. Zillah, the other wife, bore Tubal-cain, the master of all coppersmiths and blacksmiths, and Tubal-cain’s sister was Naamah. Lamech said to his wives:

‘Adah and Zillah, listen to me;

Wives of Lamech, mark what I say:

I kill a man for wounding me,

A young man for a blow.

Cain may be avenged seven times,

But Lamech seventy-seven.’

Adam lay with his wife again. She bore a son, and named him Seth, ‘for,’ she said, ‘God has granted me another son in place of Abel, because Cain killed him.’ Seth too had a son, whom he named Enosh.  At that time men began to invoke the LORD by name.