Cerdo was one who took his system from the followers of Simon, and came to live at Rome in the time of Hyginus, who held the ninth place in the episcopal succession from the apostles downwards. He taught that the God proclaimed by the law and the prophets was not the Father of our Lord Jesus Christ. For the former was known, but the latter unknown; while the one also was righteous, but the other benevolent.
Marcion of Pontus succeeded him, and developed his doctrine. In so doing, he advanced the most daring blasphemy against Him who is proclaimed as God by the law and the prophets, declaring Him to be the author of evils, to take delight in war, to be infirm of purpose, and even to be contrary to Himself. But Jesus being derived from that father who is above the God that made the world, and coming into Judaea in the times of Pontius Pilate the governor, who was the procurator of Tiberius Caesar, was manifested in the form of a man to those who were in Judaea, abolishing the prophets and the law, and all the works of that God who made the world, whom also he calls Cosmocrator. Besides this, he mutilates the Gospel which is according to Luke, removing all that is written respecting the generation of the Lord, and setting aside a great deal of the teaching of the Lord, in which the Lord is recorded as most dearly confessing that the Maker of this universe is His Father.
He likewise persuaded his disciples that he himself was more worthy of credit than are those apostles who have handed down the Gospel to us, furnishing them not with the Gospel, but merely a fragment of it. In like manner, too, he dismembered the Epistles of Paul, removing all that is said by the apostle respecting that God who made the world, to the effect that He is the Father of our Lord Jesus Christ, and also those passages from the prophetical writings which the apostle quotes, in order to teach us that they announced beforehand the coming of the Lord.
Salvation will be the attainment only of those souls which had learned his doctrine; while the body, as having been taken from the earth, is incapable of sharing in salvation. In addition to his blasphemy against God Himself, he advanced this also, truly speaking as with the mouth of the devil, and saying all things in direct opposition to the truth,--that Cain, and those like him, and the Sodomites, and the Egyptians, and others like them, and, in fine, all the nations who walked in all sorts of abomination, were saved by the Lord, on His descending into Hades, and on their running unto Him, and that they welcomed Him into their kingdom. But the serpent which was in Marcion declared that Abel, and Enoch, and Noah, and those other righteous men who sprang from the patriarch Abraham, with all the prophets, and those who were pleasing to God, did not partake in salvation. For since these men, he says, knew that their God was constantly tempting them, so now they suspected that He was tempting them, and did not run to Jesus, or believe His announcement: and for this reason he declared that their souls remained in Hades.
But since this man is the only one who has dared openly to mutilate the Scriptures, and unblushingly above all others to inveigh against God, I purpose specially to refute him, convicting him out of his own writings; and, with the help of God, I shall overthrow him out of those discourses of the Lord and the apostles, which are of authority with him, and of which he makes use. At present, however, I have simply been led to mention him, that thou mightest know that all those who in any way corrupt the truth, and injuriously affect the preaching of the Church, are the disciples and successors of Simon Magus of Samaria. Although they do not confess the name of their master, in order all the more to seduce others, yet they do teach his doctrines. They set forth, indeed, the name of Christ Jesus as a sort of lure, but in various ways they introduce the impieties of Simon; and thus they destroy multitudes, wickedly disseminating their own doctrines by the use of a good name, and, through means of its sweetness and beauty, extending to their hearers the bitter and malignant poison of the serpent, the great author of apostasy? [AH 1.27]
Clearly what Irenaeus says here is utterly consistent with what is said later in Book Three which again is utterly identical with the three divinity system reported in eastern Fathers:
God does, however, exercise a providence over all things, and therefore He also gives counsel; and when giving counsel, He is present with those who attend to moral discipline. It follows then of course, that the things which are watched over and governed should be acquainted with their ruler; which things are not irrational or vain, but they have understanding derived from the providence of God. And, for this reason certain of the Gentiles, who were less addicted to [sensual] allurements and voluptuousness, and were not led away to such a degree of superstition with regard to idols, being moved, though but slightly, by His providence, were nevertheless convinced that they should call the Maker of this universe the Father, who exercises a providence over all things, and arranges the affairs of our world.
Again, that they might remove the rebuking and judicial power from the Father, reckoning that as unworthy of God, and thinking that they had found out a God both without anger and [merely] good, they have alleged that one [God] judges, but that another saves, unconsciously taking away the intelligence and justice of both deities. For if the judicial one is not also good, to bestow favours upon the deserving, and to direct reproofs against those requiring them, he will appear neither a just nor a wise judge. On the other hand, the good God, if he is merely good, and not one who tests those upon whom he shall send his goodness, will be out of the range of justice and goodness; and his goodness will seem imperfect, as not saving all; [for it should do so,] if it be not accompanied with judgment.
Marcion, therefore, himself, by dividing God into two, maintaining one to be good and the other judicial, does in fact, on both sides, put an end to deity. For he that is the judicial one, if he be not good, is not God, because he from whom goodness is absent is no God at all; and again, he who is good, if he has no judicial power, suffers the same [loss] as the former, by being deprived of his character of deity. And how can they call the Father of all wise, if they do not assign to Him a judicial faculty? For if He is wise, He is also one who tests [others]; but the judicial power belongs to him who tests, and justice follows the judicial faculty, that it may reach a just conclusion; justice calls forth judgment, and judgment, when it is executed with justice, will pass on to wisdom. Therefore the Father will excel in wisdom all human and angelic wisdom, because He is Lord, and Judge, and the Just One, and Ruler over all. For He is good, and merciful, and patient, and saves whom He ought: nor does goodness desert Him in the exercise of justice, nor is His wisdom lessened; for He saves those whom He should save, and judges those worthy of judgment. Neither does He show Himself unmercifully just; for His goodness, no doubt, goes on before, and takes precedency.
The God, therefore, who does benevolently cause His sun to rise upon all, and sends rain upon the just and unjust, shall judge those who, enjoying His equally distributed kindness, have led lives not corresponding to the dignity of His bounty; but who have spent their days in wantonness and luxury, in opposition to His benevolence, and have, moreover, even blasphemed Him who has conferred so great benefits upon them.
Plato is proved to be more religious than these men, for he allowed that the same God was both just and good, having power over all things, and Himself executing judgment, expressing himself thus, "And God indeed, as He is also the ancient Word, possessing the beginning, the end, and the mean of all existing things, does everything rightly, moving round about them according to their nature; but retributive justice always follows Him against those who depart from the divine law." Then, again, he points out that the Maker and Framer of the universe is good. "And to the good," he says, "no envy ever springs up with regard to anything;" thus establishing the goodness of God, as the beginning and the cause of the creation of the world, but not ignorance, nor an erring Aeon, nor the consequence of a defect, nor the Mother weeping and lamenting, nor another God or Father. [AH 3.25.1 - 5]
The unmistakable testimony here makes clear that Marcionitism developed from traditional Jewish notions about 'two powers in heaven' but in specific, filtered through Platonism (hence the reference at the end). Not only does this support similar Platonic references with respect to 'those of Marcion' in Clement, I think it supports the idea that Marcionitism was rooted in Alexandrian Judaism.
