Genesis 4:7-11

If you do well, will your face not be cheerful? And if you do not do well, sin is lurking at the door; and its desire is for you, but you must master it.”

Cain talked to his brother Abel; and it happened that when they were in the field Cain rose up against his brother Abel and killed him.

Then the Lord said to Cain, “Where is Abel your brother?” And he said, “I do not know. Am I my brother’s keeper?”

Then He said, “What have you done? The voice of your brother’s blood is crying out to Me from the ground.

Now you are cursed from the ground, which has opened its mouth to receive your brother’s blood from your hand.