Genesis 4:3-10

3At the designated time Cain brought some of the fruit of the ground for an offering to the Lord.

4But Abel brought some of the firstborn of his flock – even the fattest of them. And the Lord was pleased with Abel and his offering,

5but with Cain and his offering he was not pleased. So Cain became very angry, and his expression was downcast.

6Then the Lord said to Cain, “Why are you angry, and why is your expression downcast?

7Is it not true that if you do what is right, you will be fine? But if you do not do what is right, sin is crouching at the door. It desires to dominate you, but you must subdue it.”

8Cain 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.

9Then the Lord said to Cain, “Where is your brother Abel?” And he replied, “I don’t know! Am I my brother’s guardian?”

10But the Lord said, “What have you done? The voice of your brother’s blood is crying out to me from the ground!