113 But even in the face of these serious difficulties, priests who are ardent in their devotion to God enjoy a real, sublime happiness from an awareness of their own position, for they know that they have been called by the Divine Savior to offer their help in a most holy work, which will have an effect on the redemption of the souls of men and on the growth of the Mystical Body of Christ. So let Christian families consider it one of their most sublime privileges to give priests to the Church; and so let them offer their sons to the sacred ministry with joy and gratitude.
Source: Sacerdotii Nostri Primordia (Vatican.va)