Aharon spoke to Moshe, *Behold, this day they have offered their sin offering and their burnt offering before the LORD; and such things as these have happend to me: and if I had eaten the sin offering today, would it have been pleasing in the sight of the LORD?*
The sons of Aharon presented the blood to him; and he dipped his finger in the blood, and put it on the horns of the altar, and poured out the blood at the base of the altar: