4 Judas, then, the twelfth in order of the disciples, was not a type of the suffering Æon, nor, again, was the passion of the Lord; for these two things have been shown to be in every respect mutually dissimilar and inharmonious. This is the case not only as respects the points which I have already mentioned, but with regard to the very number. For that Judas the traitor is the twelfth in order, is agreed upon by all, there being twelve apostles mentioned by name in the Gospel. But this Æon is not the twelfth, but the thirtieth; for, according to the views under consideration, there were not twelve Æons only produced by the will of the Father, nor was she sent forth the twelfth in order: they reckon her, [on the contrary,] as having been produced in the thirtieth place. How, then, can Judas, the twelfth in order, be the type and image of that Æon who occupies the thirtieth place?
Source: Adversus haereses (New Advent)