He poured of the anointing oil upon Aaron's head. The change of the verb poured for sprinkled, indicates that the amount of "the precious ointment" poured "upon the head, that ran down unto the beard, and went down to the skirts of his garments" (Psalms 133:2), was far greater than that with which the furniture of the tabernacle had been anointed.
The oil sprinkled on the holy things sanctified them as means of grace. The oil poured upon Aaron represents the grace of the Holy Spirit, coming from without, but diffusing itself over and throughout the whole consecrated man.