After making atonement for himself as well as the nation, the High Priest went to the altar for further expiatory and propitiatory work. The purification process reveals a degree of progression: it moves from the mercy seat to the tent to the altar in the courtyard.
18 En sortant, il ira vers l'autel qui est devant l'Eternel, et il fera l'expiation pour l'autel; il prendra du sang du taureau et du bouc, et il en mettra sur les cornes de l'autel tout autour.