Exodus 29:16

16and you shall kill the ram and shall take its blood and throw it against the sides of the altar.

Leviticus 3:2-5

2And ahe shall lay his hand on the head of his offering and kill it at the entrance of the tent of meeting, and Aaron’s sons the priests shall throw the blood against the sides of the altar. 3And from the sacrifice of the peace offering, as a food offering to the Lord, he shall offer bthe fat covering the entrails and all the fat that is on the entrails, 4 cand the two kidneys with the fat that is on them at the loins, and the long lobe of the liver that he shall remove with the kidneys. 5Then Aaron’s sons dshall burn it on the altar on top of the burnt offering, which is on the wood on the fire; it is a food offering with a pleasing aroma to the Lord.

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