Irenaeus Against Heresies Book I thus setting forth the mystery of these Aeons. They maintain also, that these thirty Aeons are most plainly indicated in the parable[14] Irenaeus Against Heresies Book IV Also by the parable of the workmen who were sent into the vineyard at different periods of the day, one and the same God is declared[590] Tertullian On Monogamy having laboured for the "one penny "[85]