Animal Sacrifices
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Hebrews 10:4
because it is impossible for the blood of bulls and goats to take away sins.
Genesis 8:20–22
Then Noah built an altar to the LORD. And taking from every kind of clean animal and clean bird, he offered burnt offerings on the altar. / When the LORD smelled the pleasing aroma, He said in His heart, “Never again will I curse the ground because of man, even though every inclination of his heart is evil from his youth. And never again will I destroy all living creatures as I have done. / As long as the earth endures, seedtime and harvest, cold and heat, summer and winter, day and night shall never cease.”
Leviticus 12:6
When the days of her purification are complete, whether for a son or for a daughter, she is to bring to the priest at the entrance to the Tent of Meeting a year-old lamb for a burnt offering and a young pigeon or a turtledove for a sin offering.