The Aaronic Priesthood holds 'the key of the ministering of angels and the preparatory gospel; which gospel is the gospel of repentance and of baptism, and the remission of sins'. The Aaronic Priesthood also 'has power in administering outward ordinances'.
You will be richly blessed as you fulfill your duty to God, but instead of focusing on the blessings you will receive, focus on the blessings you can share. People all around you need your priesthood service. That is the work God has for you to do.
We have seen the marvelous good you are doing as priesthood men. We testify that the priesthood is God’s power. He shares it with you because He loves you—and because He loves the people you serve.