About the year 1170, Odo, prior of Canterbury and later abbot of Battle, wrote a letter of edification to one of his novices describing the great spiritual opportunities and privileges offered by monastic life. Among other things, the learned and saintly prior outlined a theological interpretation of universal history in this fashion:
O admirable mystery and admirable sacrament! God gave to the hearts of men a First Testament which was called Natural Law; had they observed it, they would not have needed another. But being lovers of novelty, men neglected it, when it grew old, and God gave them a Second Testament in the Circumcision, which some adopted with a certain willingness on account of its novelty. But this also became old and was neglected, hence God gave a Third Testament in the Baptism which is predestined to remain for eternity. Yet when this too became old through long use, men gradually began to be neglectful of it, and God gave them a Fourth Testament in the Monastic Cowl (cuculla) to the novelty of which almost the whole world, lover of novelties, has now turned. After this, there will not be a fifth one, because in this all the benedictions granted to all peoples are contained. All religion and all holiness contained in the three previous Testaments, are condensed in the Testament of St Benedict.