The following video does a pretty good job of briefly reviewing teachings on the priesthood. There is only one High Priest: Jesus Christ, all other priests are his ministers. He works through his priests who act in persona Christi (in the person of Christ). Christ established the sacrament of Holy Orders in order that men should minister in his person by teaching, governing and sanctifying. All of this is done in and through Jesus who minsters through his priests. This video traces some of the history and teachings about the priesthood and is also entertaining. It is three and a half minutes. Enjoy the “outtakes” at the end as well 🙂