Leviticus 5:9

And he shall sprinkle of the blood of the sin offering upon the side of the altar ,.... Or "wall" F3 על קיר επι τον τοιχον , Sept. "super parietem", Pagninus, Montanus, Junius & Tremellius, Piscator, Drusius; "ad parietem", Tigurine version. it is asked F4 Maimon. in Misn. Zebachim, c. 6. sect. 4. ,"what is the wall at which the rest of the blood is wrung out? this is the lower wall, namely, the half of the height of the altar below, under the thread (of scarlet that goes round the middle of the altar) that the rest of the blood may be squeezed at the bottom of the altar, and because of this the sin offering of the fowl is below,'that is, the sprinkling of its blood. And so Ben Gersom observes; from hence we learn, says he, that the sprinkling of the sin offering of the fowl was in the lower part of the altar; and I think this sprinkling, adds he, was not in the length, but in the breadth:

and the rest of the blood shall be wrung out at the bottom of the altar ; the blood sprinkled was that which dropped from it when nipped by the priest; this here was squeezed out by him, and was shed at the foot of the altar; so that the altar had all the blood, and nothing but the blood of the fowl, all the rest belonged to the priest F5 Misn. ib. : this might be an emblem both of the drops of blood which fell from Christ in the garden, and of the shedding of his blood upon the cross, whereby remission of sin was obtained, and atonement made:

it is a sin offering ; an offering whereby sin was typically expiated and stoned.