According to the Catholic Encyclopedia, there are two sides to the priesthood: offering the Holy Sacrifice of the Mass and forgiving sins. Among the duties of a Catholic priest are the celebration of the Eucharist as a presider in persona Christi or as a concelebrant if required. Priests are also responsible for daily recitation of the principal and minor offices of the Liturgy of the Hours. Catholic priests are the only ministers of the Sacrament of Penance and Anointing of the Sick. They are the only ones who can celebrate the Eucharist in the Catholic Church (not to be confused with distribution by deacons or by extraordinary ministers). They and deacons are ordinary ministers of Baptism and witnesses to Holy Matrimony.

They have to take care of the church or worshiping place, as their duty they have to listen to the problems of the followers. A Priest, under the direction of his Bishop, has the responsibility of teaching and looking to the welfare his flock. He can be assisted by Lay Preachers or by any member his parish.