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

44. Irenaeus says that the Marcosians "for the baptism instituted by the visible Jesus was for the remission of sins, but the redemption brought in by that Christ who descended upon Him, was for perfection; and they allege that the former is animal, but the latter spiritual. And the baptism of John was proclaimed with a view to repentance, but the redemption by Christ was brought in for the sake of perfection." [AH i.22.1]

Clement of Alexandria writes "straightway, on our regeneration, we attained that perfection after which we aspired. For we were illuminated, which is to know God. He is not then imperfect who knows what is perfect. And do not reprehend me when I profess to know God; for so it was deemed right to speak to the Word, and He is free ... Being baptized, we are illuminated; illuminated, we become sons; being made sons, we are made perfect; being made perfect, we are made immortal. "I," says He, "have said that ye are gods, and all sons of the Highest." This work is variously called grace, and illumination, and perfection, and washing: washing, by which we cleanse away our sins; grace, by which the penalties accruing to transgressions are remitted; and illumination, by which that holy light of salvation is beheld, that is, by which we see God clearly. Now we call that perfect which wants nothing. For what is yet wanting to him who knows God? For it were truly monstrous that that which is not complete should be called a gift (or act) of God's grace. Being perfect, He consequently bestows perfect gifts. As at His command all things were made, so on His bare wishing to bestow grace, ensues the perfecting of His grace. For the future of time is anticipated by the power of His volition." [Instructor i.6]