Augustine of Hippo : And you shall present the bullock to the door of the tabernacle of the testimony; and Aaron and his sons shall lay their hands on the head of the bull before the Lord. Here it is already clear why it is said before that his hands were to be consecrated, that is, his power had to be fulfilled, so that they too would sanctify, as now, when they put their hands on the bull that is going to be immolated. — QUESTIONS ON EXODUS, Q. 126 (tr. J. Litteral, draft)