Justin Fontenot of the Prayerful Anglican states that the "guardian angel concept is clearly present in the Old Testament, and its development is well marked" and he continues, stating that in "the New Testament the concept of guardian angel may be noted with greater precision". Fontenot also cites Jerome, a Church Father, who said: "'how great the dignity of the soul, since each one has from his birth an angel commissioned to guard it. ' (Comm. in Matt. , xviii, lib. II). " In the same vein, Of the Intercession and Invocation of Angels and Saints, printed in the Library of Anglo-Catholic Theology, held that "Many learned Protestants think it probable that each of the faithful, at least, has a guardian angel. It seems certainly proved by Scripture. Zanchius says that all the Fathers held this opinion. " Building upon Sacred Scripture and the teachings of the Church Fathers, Richard Montagu, the Anglican Bishop of Norwich in the 17th century, stated that "It is an opinion received, and hath been long, that if not every man, each son of Adam, yet sure each Christian man regenerate by water and the Holy Ghost, at least from the day of his regeneration and new birth unto God, if not from the time of his coming into the world, hath by God's appointment and assignation an Angel Guardian to attend upon him at all assayes, in all his ways, at his going forth, at his coming home".