Jesus said to them again, “Peace be with you. As the Father has sent me, even so I send you.” And when he had said this, he breathed on them, and said to them, “Receive the Holy Spirit. If you forgive the sins of any, they are forgiven; if you retain the sins of any, they are retained.“
John 20:20-23

The sacrament of Holy Orders creates a priest.

There's a little more to it than that, of course. As the Catechism's section on Holy Orders says: this "is the sacrament through which the mission entrusted by Christ to his apostles continues to be exercised in the Church until the end of time: thus it is the sacrament of apostolic ministry. It includes three degrees"—the orders of bishop, priest, and deacon. (Catechism, 1536)

But to keep things simple, let's start with the priest.

To know what a priest is we have to know what a sacrifice is.

Nowadays the word "sacrifice" is used in many different ways. But in its strict meaning, its original meaning, a sacrifice is the offering of a gift to God by a group, through the agency of someone who has the right to represent the group.

The purpose of such an offering is to give group worship to God; that is, to acknowledge God's supreme lordship over mankind, to thank him for his blessings, to atone for human sin, and to beg for his benefits.

                                                     Quo Vadis Days
Is a 3-day camp for young Catholic men to learn more about the priesthood, to deepen their faith, and to better discern God’s call in their lives. 

This year's camp will take place at Camp Howard, near beautiful Mt. Hood, on Mon, June 24th – Thu, June 27th. 

More info and registration information can be found here: http://qvdays.org/register/archdiocese-of-portland/