1 The excellence of the order of priests in the Church has already been recalled to the minds of all by this sacred synod. Since, however, in the renewal of Christ's Church tasks of the greatest importance and of ever increasing difficulty are being given to this order, it was deemed most useful to treat of the subject of priests at greater length and with more depth. What is said here applies to all priests, especially those devoted to the care of souls, with suitable adaptations being made for priests who are religious. Priests by sacred ordination and mission which they receive from the bishops are promoted to the service of Christ the Teacher, Priest and King. They share in his ministry, a ministry whereby the Church here on earth is unceasingly built up into the People of God, the Body of Christ and the Temple of the Holy Spirit. Therefore, in order that their ministry be carried on more effectively and their lives be better provided for, in pastoral and human circumstances which very often change so profoundly, this sacred synod declares and decrees as follows.
Source: Presbyterorum Ordinis (Vatican.va)