Exodus 29:7-9

7Take the special olive oil. Pour it on his head to show that God has chosen him to be his servant.

8Bring Aaron's sons and dress them in their special shirts.

9Put the cloth hats on their heads. Tie the long cloth belts around Aaron and on his sons. These men and their descendants will always be priests. That is a law that continues for ever. That is how you must make Aaron and his sons God's special servants.