Today, most people think it came from Gaul around the year 500. Its positions are similar to those taken by St. Ambrose of Milan, Augustine of Hippo or Vincent of Lérins. J.N.D. Kelly, a contemporary patristics scholar, believes that St. Vincent of Lérins was not its author, but suggests that it may have come from the same bacground, namely the area of Lerins in southern Gaul. Caesarius of Arles is one of the possible authors. 