Genesis 4 verse 1 to 8
1 Adam made love to his wife Eve, and she became pregnant and gave birth to Cain. She said, “With the help of the LORD I have brought forth a man.”
2 Later she gave birth to his brother Abel.
Now Abel kept flocks, and Cain worked the soil.
3 In the course of time Cain brought some of the fruits of the soil as an offering to the LORD.
4 And Abel also brought an offering, fat portions from some of the firstborn of his flock. The LORD looked with favour on Abel and his offering,
5 but on Cain and his offering He did not look with favour. So Cain was very angry, and his face was downcast.
6 Then the LORD said to Cain, “Why are you angry? Why is your face downcast?
7 If you do what is right, will you not be accepted? But if you do not do what is right, sin is crouching at your door; it desires to have you, but you must rule over it.”
8 Now Cain said to his brother Abel, “Let’s go out to the field." While they were in the field, Cain attacked his brother Abel and killed him.