The Christian, at almost every important stage of his mortal career, finds at his side the priest with power received from God, in the act of communicating or increasing that grace which is the supernatural life of his soul.
Scarcely is he born before the priest baptizing him, brings him by a new birth to a more noble and precious life, a supernatural life, and makes him a son of God and of the Church of Jesus Christ. To strengthen him to fight bravely in spiritual combats, a priest invested with special dignity makes him a soldier of Christ by holy chrism.
Then, as soon as he is able to recognize and value the Bread of Angels, the priest gives It to him, the living and life-giving Food come down from Heaven. If he fall, the priest raises him up again in the name of God, and reconciles him to God with the Sacrament of Penance. Again, if he is called by God to found a family and to collaborate with Him in the transmission of human life throughout the world, thus increasing the number of the faithful on earth and, thereafter, the ranks of the elect in Heaven, the priest is there to bless his espousals and unblemished love; and when, finally, arrived at the portals of eternity, the Christian feels the need of strength and courage before presenting himself at the tribunal of the Divine Judge, the priest with the holy oils anoints the failing members of the sick or dying Christian, and reconsecrates and comforts him.
Thus the priest accompanies the Christian throughout the pilgrimage of this life to the gates of Heaven. He accompanies the body to its resting place in the grave with rites and prayers of immortal hope. And even beyond the threshold of eternity he follows the soul to aid it with Christian suffrages, if need there be of further purification and alleviation. Thus, from the cradle to the grave the priest is ever beside the faithful, a guide, a solace, a minister of salvation and dispenser of grace and blessing.
AD CATHOLICI SACERDOTII, Pius XI