Genesis 4:3-5

Darby Translation

³ And in process of time it came to pass that Cain brought of the fruit of the ground an offering to Jehovah.

⁴ And Abel, he also brought of the firstlings of his flock, and of their fat. And Jehovah looked upon Abel, and on his offering;

⁵ and upon Cain, and on his offering, he did not look. And Cain was very angry, and his countenance fell.