What are some of the things you can and should do when you hold the Aaronic Priesthood? “With the authorization of the presiding priesthood leader (usually the bishop or branch president), deacons pass the sacrament. They help the bishop or branch president watch over Church members by giving service and assisting with temporal matters such as gathering fast offerings. Teachers may perform all the duties of deacons, and they also receive other opportunities to serve. They prepare the sacramental bread and water and serve as home teachers. Priests may perform all the duties of deacons and teachers. With the authorization of the presiding priesthood leader, they may also bless the sacrament, baptize, and ordain others to the offices of priest, teacher, and deacon.” (Source)
John the Baptist came and restored the Aaronic Priesthood to the earth. We even know what he said when he gave the Aaronic Priesthood to Joseph Smith and Oliver Cowdery. We find a record of John’s words in D&C Section 13 (and Joseph Smith History 1:69). What does it say and what does it tell us about the responsibilities the bearers of the Aaronic Priesthood have?
“Upon you my fellow servants, in the name of Messiah, I confer the Priesthood of Aaron, which holds the keys of the ministering of angels, and of the gospel of repentance, and of baptism by immersion for the remission of sins; and this shall never be taken again from the earth until the sons of Levi do offer again an offering unto the Lord in righteousness.”