3. Such are the thirty Æons in the erroneous system of these men; and they are described as being wrapped up, so to speak, in silence, and known to none [except these professing teachers]. Moreover, they declare that this invisible and spiritual Pleroma of theirs is tripartite, being divided into an Ogdoad, a Decad, and a Duodecad. And for this reason they affirm it was that the “Saviour”—for they do not please to call Him “Lord”—did no work in public during the space of thirty years, thus setting forth the mystery of these Æons. They maintain also, that these thirty Æons are most plainly indicated in the parable of the labourers sent into the vineyard. For some are sent about the first hour, others about the third hour, others about the sixth hour, others about the ninth hour, and others about the eleventh hour. Now, if we add up the numbers of the hours here mentioned, the sum total will be thirty: for one, three, six, nine, and eleven, when added together, form thirty. And by the hours, they hold that the Æons were pointed out; while they maintain that these are great, and wonderful, and hitherto unspeakable mysteries which it is their special function to develop; and so they proceed when they find anything in the multitude of things contained in the Scriptures which they can adopt and accommodate to their baseless speculations.