Moses as the mediator of the covenant of the Law (Galatians 3:19; Hebrews 8:6) was called to perform the priestly functions…

And he brought the bullock for the sin offering —Though duly consecrated, Aaron and his sons had first to be purged of th…

And he brought the bullock for the sin [offering]
To the tabernacle, into the court of it, to the altar of burnt off…

In these types we see our great High Priest, namely Christ Jesus, solemnly appointed, anointed, and invested with his sacred office, by his own blo…