Genesis 4:1-16

Adam slept with his wife Eve and she became pregnant. She gave birth to Cain, and said, “With the Lord's help I have made a man.” Later she gave birth to his brother Abel. Abel became a shepherd, while Cain was a crop farmer. Sometime later Cain brought some of the produce he'd grown as an offering to the Lord. Abel also brought an offering: the firstborn lambs of his flock, selecting the very best parts to offer. The Lord was pleased with Abel and his offering, but he wasn't pleased with Cain and his offering, which made Cain very angry and he frowned in annoyance. The Lord said to Cain, “Why are you so angry? Why do you look so annoyed? If you were doing what's right, then you'd be looking happy. But if you don't do what's right, then sin will be like an animal crouching outside your home, ready to pounce on you. It wants to have you, but you must be the one in control.” Later, when Cain was talking with his brother Abel they went out into the fields where Cain attacked his brother and killed him. “Where is your brother Abel?” the Lord asked Cain. “How should I know?” he replied. “Am I supposed to be my brother's care-giver?” “What have you done?” the Lord asked. “Your brother's blood is crying out to me from the ground. Consequently you are more cursed than the ground because you soaked it with your brother's blood. When you cultivate the ground, it won't produce crops for you. You'll be always on the run, wandering all over the earth.” “My punishment is more than I can take,” Cain replied. “Look! You're driving me away right now—cursing the ground and banishing me from your presence. I'm going to have to hide and always be on the run, left to wander all over the earth. Anyone who finds me is going to kill me!” But the Lord replied, “No, Cain. Anyone who kills you will be punished seven times over.” The Lord placed a mark on Cain so that no one who came across him would kill him. So Cain left the Lord's presence and went to live in a land called Nod, east of Eden.