Genesis 4:1-10 English Standard Version (ESV)
Cain and Abel
4 Now Adam knew Eve his wife, and she conceived and bore Cain, saying, “I have gotten[a] a man with the help of the Lord.” 2 And again, she bore his brother Abel. Now Abel was a keeper of sheep, and Cain a worker of the ground. 3 In the course of time Cain brought to the Lord an offering of the fruit of the ground, 4 and Abel also brought of the firstborn of his flock and of their fat portions. And the Lord had regard for Abel and his offering, 5 but for Cain and his offering he had no regard. So Cain was very angry, and his face fell. 6 The Lord said to Cain, “Why are you angry, and why has your face fallen? 7 If you do well, will you not be accepted?[b] And if you do not do well, sin is crouching at the door. Its desire is contrary to[c] you, but you must rule over it.”
8 Cain spoke to Abel his brother.[d] And when they were in the field, Cain rose up against his brother Abel and killed him. 9 Then the Lord said to Cain, “Where is Abel your brother?” He said, “I do not know; am I my brother’s keeper?” 10 And the Lord said, “What have you done? The voice of your brother’s blood is crying to me from the ground.