63 He proved to be a tireless worker for God, one who was wise and devoted in winning over young people and bringing families back to the standards of Christian morality, a worker who was never too tired to show an interest in the human needs of his flock, one whose own way of life was very close to theirs and who was prepared to exert every effort and make any sacrifice to establish Christian schools and to make missions available to the people: and all of these things show that St. John M. Vianney reproduced the true image of the good shepherd in himself as he dealt with the flock entrusted to his care, for he knew his sheep, protected them from dangers, and gently but firmly looked after them.
Source: Sacerdotii Nostri Primordia (Vatican.va)