What was the high priest required to do after he bathed?
Leviticus 16:24 (ESV)
24And he shall bathe his body in water in a holy place and put on his garments and come out and offer his burnt offering and the burnt offering of the people and make atonement for himself and for the people.
After the high priest came out of the tabernacle, he went to the altar in order to present the burnt offering for both himself and the nation. This completed the sacrificial offering.
24 And he shall bathe his body in water in a holy place and put on his garments and come out and offer his burnt offering and the burnt offering of the people and make atonement for himself and for the people.