After Moses waved the breast before the Lord, he sprinkled Aaron, his sons, and their garments with a combination of oil and blood. Aaron and his sons were objects of sprinkling just as the other utensils had been purified. This association of the priests with the tabernacle's holy objects speaks of the intimate connection between the two. Wenham (p. 142) says, “Through the blood from the altar Aaron is ordained to offer sacrifice at the altar.”
30 Moïse prit de l'huile d'onction et du sang qui était sur l'autel; il en fit l'aspersion sur Aaron et sur ses vêtements, sur les fils d'Aaron et sur leurs vêtements; et il sanctifia Aaron et ses vêtements, les fils d'Aaron et leurs vêtements avec lui.