1 Now Adam knew Eve his wife, and she conceived and bore [a]Cain, and said, “I have acquired a man from the Lord.” 2 Then she bore again, this time his brother [b]Abel. Now Abel was a keeper of sheep, but Cain was a tiller of the ground. 3 And [c]in the process of time it came to pass that Cain brought an offering of the fruit of the ground to the Lord. 4 Abel also brought of the firstborn of his flock and of their fat. And the Lordrespected Abel and his offering, 5 but He did not respect Cain and his offering. And Cain was very angry, and his countenance fell.
Genesis 4:1-5