15 And Moses proceeded to slaughter+ it and take the blood+ and put it with his finger upon the horns of the altar round about and purify the altar from sin, but the rest of the blood he poured at the base of the altar, that he might sanctify it to make atonement+ upon it.

18 “And he must come out to the altar,+ which is before Jehovah, and make atonement* for it, and he must take some of the bull’s blood and some of the goat’s blood and put it upon the horns of the altar round about.+