“And Abel, he also brought of the firstlings of his flock and of the fat thereof. And the LORD had respect unto Abel and to his offering: / But unto Cain and to his offering he had not respect. And Cain was very wroth, and his countenance fell.”
Bible
“And he shall bring his trespass offering unto the LORD, a ram without blemish out of the flock, with thy estimation, for a trespass offering, unto the priest: / And the priest shall make an atonement for him before the LORD: and it shall be forgiven him for any thing of all that he hath done in trespassing therein.”
“All the firstling males that come of thy herd and of thy flock thou shalt sanctify unto the LORD thy God: thou shalt do no work with the firstling of thy bullock, nor shear the firstling of thy sheep.”
“And Pharaoh called unto Moses, and said, Go ye, serve the LORD; only let your flocks and your herds be stayed: let your little ones also go with you.”
“And the LORD hath blessed my master greatly; and he is become great: and he hath given him flocks, and herds, and silver, and gold, and menservants, and maidservants, and camels, and asses.”
“They shall go with their flocks and with their herds to seek the LORD; but they shall not find him; he hath withdrawn himself from them.”
“But cursed be the deceiver, which hath in his flock a male, and voweth, and sacrificeth unto the LORD a corrupt thing: for I am a great King, saith the LORD of hosts, and my name is dreadful among the heathen.”