¹⁴ Then Moses presented the bull for the sin offering. Aaron and his sons laid their hands on the bull’s head, ¹⁵ and Moses slaughtered it. Moses took some of the blood, and with his finger he put it on the four horns of the altar to purify it. He poured out the rest of the blood at the base of the altar. Through this process, he made the altar holy by purifying it.^{[a] 16} Then Moses took all the fat around the internal organs, the long lobe of the liver, and the two kidneys and the fat around them, and he burned it all on the altar.