52 The Good Shepherd said: "And other sheep I have that are not of this fold; them also I must bring;" and again, "See the countries for they are white already to the harvest." How can a priest meditate upon these words and not feel his heart enkindled with yearning to lead souls to the Heart of the Good Shepherd? How can he fail to offer himself to the Lord of the harvest for unremitting toil? Our Lord saw the multitudes "Iying like sheep that have no shepherd." Such multitudes are to be seen today not only in the far distant lands of the missions, but also, alas! in countries which have been Christian for centuries. How can a priest see such multitudes and not feel deeply within himself an echo of that divine pity which so often moved the Heart of the Son of God? - a priest, we say, who is conscious of possessing the words of life and of having in his hands the God-given means of regeneration and salvation?
Source: Ad Catholici Sacerdotii (Vatican.va)