Genesis 4:8-10

4:8 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.

4:9 Then the Lord said to Cain, “Where is your brother Abel?” And he replied, “I don’t know! Am I my brother’s guardian?” 4:10 But the Lord said, “What have you done? The voice of your brother’s blood is crying out to me from the ground!