The Twenty Fifth Proof that Clement of the Alexandrian See of St. Mark Was a Prominent Leader of the Tradition Irenaeus Identifies as 'Marcosian'

25. Irenaeus writes that he wishes "to explain their [the Marcosians] theory as to the way in which the creation itself was formed through the mother by the Demiurge (as it were without his knowledge), after the image of things invisible. They maintain, then, that first of all the four elements, fire, water, earth, and air, were produced after the image of the primary Tetrad above." [AH i.17.1]

Clement writes that "there is the veil of the entrance into the holy of holies. Four pillars there are, the sign of the sacred tetrad of the ancient covenants ... [and so] the twelve stones, set in four rows on the breast, describe for us the circle of the zodiac, in the four changes of the year." [Stromata v.7]