The chief power of the priest is to offer the Sacrifice of the Mass. Here he exercises his office of reconciliation by applying to the people the power of the Cross of Christ to unite man to God in love and to change bread and wine into the body and blood of Christ. The priest also administers the Sacrament of Penance to remove the chief obstacle to reconciliation, which is sin.
Holy Orders is a sacrament through which the mission entrusted by Christ to his apostles continues to be exercised in the church until the end of time.
The anointing of the Spirit seals the priest with an indelible, spiritual character that configures him to Christ the priest and enables him to act in the name of Christ the Head. As a co-worker of the order of bishops he is consecrated to preach the Gospel, to celebrate divine worship, especially the Eucharist from which his ministry draws its strength, and to be a shepherd of the faithful.
The Sacrament provides a foundation for teaching all the Sacraments.