The men who followed the Apostolic Fathers in the 2nd, 3rd and early 4th centuries fought many important battles for orthodox Christianity as passed to them from Jesus Christ through the apostles and the apostolic fathers. The writings of these brave men are important for modern Christian apologists to read because the battles they fought are similar to what we fight today. Plus, we can learn from the deep devotion they presented in both their lives and ministries.
In our last study we began looking at what Irenaeus of Lyons is known best for – his multi-book series, Against Heresies. We now turn to Book II.
Against Heresies, Book II
Irenaeus used the Preface of his second book to remind readers that his purpose in writing was “exposing knowledge falsely so called” –
“In the first book, which immediately precedes this, exposing ‘knowledge falsely so called,’ I showed thee, my very dear friend, that the whole system devised, in many and opposite ways, by those who are of the school of Valentinus, was false and baseless. I also set forth the tenets of their predecessors, proving that they not only differed among themselves, but had long previously swerved from the truth itself. I further explained, with all diligence, the doctrine as well as practice of Marcus the magician, since he, too, belongs to these persons; and I carefully noticed the passages which they garble from the Scriptures, with the view of adapting them to their own fictions. Moreover, I minutely narrated the manner in which, by means of numbers, and by the twenty-four letters of the alphabet, they boldly endeavour to establish [what they regard as] truth. I have also related how they think and teach that creation at large was formed after the image of their invisible Pleroma, and what they hold respecting the Demiurge, declaring at the same time the doctrine of Simon Magus of Samaria, their progenitor, and of all those who succeeded him. I mentioned, too, the multitude of those Gnostics who are sprung from him, and noticed the points of difference between them, their several doctrines, and the order of their succession, while I set forth all those heresies which have been originated by them. I showed, moreover, that all these heretics, taking their rise from Simon, have introduced impious and irreligious doctrines into this life; and I explained the nature of their “redemption,” and their method of initiating those who are rendered ‘perfect,’ along with their invocations and their mysteries. I proved also that there is one God, the Creator, and that He is not the fruit of any defect, nor is there anything either above Him, or after Him.” Preface.1
Irenaeus then explained what he planned to accomplish in his second book –
“In the present book, I shall establish those points which fit in with my design, so far as time permits, and overthrow, by means of lengthened treatment under distinct heads, their whole system; for which reason, since it is an exposure and subversion of their opinions, I have so entitled the composition of this work. For it is fitting, by a plain revelation and overthrow of their conjunctions, to put an end to these hidden alliances, and to Bythus himself, and thus to obtain a demonstration that he never existed at any previous time, nor now has any existence.” Preface.2
Irenaeus began his apologetic by addressing the Gnostic belief concerning the “pleroma” –
“It is proper, then, that I should begin with the first and most important head, that is, God the Creator, who made the heaven and the earth, and all things that are therein (whom these men blasphemously style the fruit of a defect), and to demonstrate that there is nothing either above Him or after Him; nor that, influenced by any one, but of His own free will, He created all things, since He is the only God, the only Lord, the only Creator, the only Father, alone containing all things, and Himself commanding all things into existence.” Chapter 1.1
“For how can there be any other Fulness, or Principle, or Power, or God, above Him, since it is matter of necessity that God, the Pleroma (Fulness) of all these, should contain all things in His immensity, and should be contained by no one? But if there is anything beyond Him, He is not then the Pleroma of all, nor does He contain all. For that which they declare to be beyond Him will be wanting to the Pleroma, or, [in other words, ] to that God who is above all things. But that which is wanting, and falls in any way short, is not the Pleroma of all things. In such a case, He would have both beginning, middle, and end, with respect to those who are beyond Him. And if He has an end in regard to those things which are below, He has also a beginning with respect to those things which are above. In like manner, there is an absolute necessity that He should experience the very same thing at all other points, and should be held in, bounded, and enclosed by those existences that are outside of Him. For that being who is the end downwards, necessarily circumscribes and surrounds him who finds his end in it. And thus, according to them, the Father of all (that is, He whom they call Proön and Proarche), with their Pleroma, and the good God of Marcion, is established and enclosed in some other, and is surrounded from without by another mighty Being, who must of necessity be greater, inasmuch as that which contains is greater than that which is contained. But then that which is greater is also stronger, and in a greater degree Lord; and that which is greater, and stronger, and in a greater degree Lord-must be God.” Chapter 1.2
Irenaeus mentioned Marcion many times in Against Heresies. Marcion was a bishop in the early part of the 2nd century AD who taught that the God of the Old Testament was not the Father of Jesus Christ. Marcion rejected the Old Testament as Scripture and believed the original apostles became false apostles by Judaizing the Gentiles who were becoming Christians. Marcion believed that Paul was the only true apostle and that only edited portions of some of Paul’s writings (and a shortened version of Luke’s Gospel) were Scripture. Marcion’s views became popular with many churches in the 2nd century, which led to a strong defense of Old and New Testament writings and theology by orthodox church leaders.
Here are some of Irenaeus’ comments about Marcion in Book 2 of Against Heresies –
“These remarks are, in like manner, applicable against the followers of Marcion. For his two gods will also be contained and circumscribed by an immense interval which separates them from one another. But then there is a necessity to suppose a multitude of gods separated by an immense distance from each other on every side, beginning with one another, and ending in one another. Thus, by that very process of reasoning on which they depend for teaching that there is a certain Pleroma or God above the Creator of heaven and earth, any one who chooses to employ it may maintain that there is another Pleroma above the Pleroma, above that again another, and above Bythus another ocean of Deity, while in like manner the same successions hold with respect to the sides; and thus, their doctrine flowing out into immensity, there will always be a necessity to conceive of other Pleroma, and other Bythi, so as never at any time to stop, but always to continue seeking for others besides those already mentioned. Moreover, it will be uncertain whether these which we conceive of are below, or are, in fact, themselves the things which are above; and, in like manner, will be doubtful] respecting those things which are said by them to be above, whether they are really above or below; and thus our opinions will have no fixed conclusion or certainty, but will of necessity wander forth after worlds without limits, and gods that cannot be numbered.” Chapter 1.4
“The Bythus, therefore, whom they conceive of with his Pleroma, and the God of Marcion, are inconsistent. If indeed, as they affirm, he has something subjacent and beyond himself, which they style vacuity and shadow, this vacuum is then proved to be greater than their Pleroma. But it is inconsistent even to make this statement, that while he contains all things within himself, the creation was formed by some other. For it is absolutely necessary that they acknowledge a certain void and chaotic kind of existence (below the spiritual Pleroma) in which this universe was formed, and that the Propator purposely left this chaos as it was, either knowing beforehand what things were to happen in it, or being ignorant of them. If he was really ignorant, then God will not be prescient of all things. But they will not even [in that case] be able to assign a reason on what account He thus left this place void during so long a period of time. If, again, He is prescient, and contemplated mentally that creation which was about to have a being in that place, then He Himself created it who also formed it beforehand [ideally] in Himself.” Chapter 3.1
“But, beyond reason inflated [with your own wisdom], ye presumptuously maintain that ye are acquainted with the unspeakable mysteries of God; while even the Lord, the very Son of God, allowed that the Father alone knows the very day and hour of judgment, when He plainly declares, ‘But of that day and that hour knoweth no man, neither the Son, but the Father only.’ If, then, the Son was not ashamed to ascribe the knowledge of that day to the Father only, but declared what was true regarding the matter, neither let us be ashamed to reserve for God those greater questions which may occur to us. For no man is superior to his master. If any one, therefore, says to us, ‘How then was the Son produced by the Father?’, we reply to him, that no man understands that production, or generation, or calling, or revelation, or by whatever name one may describe His generation, which is in fact altogether indescribable. Neither Valentinus, nor Marcion, nor Saturninus, nor Basilides, nor angels, nor archangels, nor principalities, nor powers [possess this knowledge], but the Father only who begat, and the Son who was begotten. Since therefore His generation is unspeakable, those who strive to set forth generations and productions cannot be in their right mind, inasmuch as they undertake to describe things which are indescribable. For that a word is uttered at the bidding of thought and mind, all men indeed well understand. Those, therefore, who have excogitated [the theory of] emissions have not discovered anything great, or revealed any abstruse mystery, when they have simply transferred what all understand to the only-begotten Word of God; and while they style Him unspeakable and unnameable, they nevertheless set forth the production and formation of His first generation, as if they themselves had assisted at His birth, thus assimilating Him to the word of mankind formed by emissions.” Chapter 28.6
Irenaeus addressed Marcion and his followers many more times in Against Heresies in Books 3, 4 and 5. We will also read more about Marcion when we look at the writings of Tertullian.
Valentinus was another popular Gnostic teacher in the early part of the 2nd century. He believed that only he and his followers received the knowledge (gnosis) that led to the highest form of salvation. Valentinus also taught that angels participated in creation and played an essential role in the salvation of humans. Irenaeus addressed those and other heresies in Book 2 –
“Those, moreover, who say that the world was formed by angels, or by any other maker of it, contrary to the will of Him who is the Supreme Father, err first of all in this very point, that they maintain that angels formed such and so mighty a creation, contrary to the will of the Most High God. This would imply that angels were more powerful than God; or if not so, that He was either careless, or inferior, or paid no regard to those things which took place among His own possessions, whether they turned out ill or well, so that He might drive away and prevent the one, while He praised and rejoiced over the other. But if one would not ascribe such conduct even to a man of any ability, how much less to God.” Chapter 2.1
“The cause, then, of such a dispensation on the part of God, is to be inquired after; but the formation of the world is not to be ascribed to any other. And all things are to be spoken of as having been so prepared by God beforehand, that they should be made as they have been made; but shadow and vacuity are not to be conjured into existence. But whence, let me ask, came this vacuity [of which they speak]? If it was indeed produced by Him who, according to them, is the Father and Author of oil things, then it is both equal in honor and related to the rest of the Aeons, perchance even more ancient than they are. Moreover, if it proceeded from the same source [as they did], it must be similar in nature to Him who produced it, as well as to those along with whom it was produced. There will therefore be an absolute necessity, both that the Bythus of whom they speak, along with Sige, be similar in nature to a vacuum, that is, that He really is a vacuum; and that the rest of the Aeons, since they are the brothers of vacuity, should also be devoid of substance. If, on the other hand, it has not been thus produced, it must have sprang from and been generated by itself, and in that case it will be equal in point of age to that Bythus who is, according to them, the Father of oil; and thus vacuity will be of the same nature and of the same honor with Him who is, according to them, the universal Father. For it must of necessity have been either produced by some one, or generated by itself, and sprung from itself. But if, in truth, vacuity was produced, then its producer Valentinus is also a vacuum, as are likewise his followers. If, again, it was not produced, but was generated by itself, then that which is really a vacuum is similar to, and the brother of, and of the same honor with, that Father who has been proclaimed by Valentinus; while it is more ancient, and dating its existence from a period greatly anterior, and more exalted in honor than the remaining Aeons of Ptolemy himself, and Heracleon, and all the rest who hold the same opinions.” Chapter 4.1
“As to the point, then, that their system is weak and untenable as well as utterly chimerical, enough has been said. For it is not needful, to use a common proverb, that one should drink up the ocean who wishes to learn that its water is salt. But, just as in the case of a statue which is made of clay, but coloured on the outside that it may be thought to be of gold, while it really is of clay, any one who takes out of it a small particle, and thus laying it open reveals the clay, will set free those who seek the truth from a false opinion; in the same way have I (by exposing not a small part only, but the several heads of their system which are of the greatest importance) shown to as many as do not wish wittingly to be led astray, what is wicked, deceitful, seductive, and pernicious, connected with the school of the Valentinians, and all those other heretics who promulgate wicked opinions respecting the Demiurge, that is, the Fashioner and Former of this universe, and who is in fact the only true God-exhibiting, [as I have done, ] how easily their views are overthrown.” Chapter 19.8
“But if any lover of strife contradict what I have said, and also what the apostle affirms, that ‘we know in part, and prophesy in part,’ and imagine that he has acquired not a partial, but a universal, knowledge of all that exists,-being such an one as Valentinus, or Ptolemaeus, or Basilides, or any other of those who maintain that they have searched out the deep things of God,-let him not (arraying himself in vainglory) boast that he has acquired greater knowledge than others with respect to those things which are invisible, or cannot be placed under our observation; but let him, by making diligent inquiry, and obtaining information from the Father, tell us the reasons (which we know not) of those things which are in this world,-as, for instance, the number of hairs on his own head, and the sparrows which are captured day by day, and such other points with which we are not previously acquainted,-so that we may credit him also with respect to more important points. But if those who are perfect do not yet understand the very things in their hands, and at their feet, and before their eyes, and on the earth, and especially the rule followed with respect to the hairs of their head, how can we believe them regarding things spiritual, and super-celestial, and those which, with a vain confidence, they assert to be above God? So much, then, I have said concerning numbers, and names, and syllables, and questions respecting such things as are above our comprehension, and concerning their improper expositions of the parables: [I add no more on these points, ] since thou thyself mayest enlarge upon them.” Chapter 28.9
“Those, then, who are of the school of Valentinus being overthrown, the whole multitude of heretics are, in fact, also subverted. For all the arguments I have advanced against their Pleroma, and with respect to those things which are beyond it, showing how the Father of all is shut up and circumscribed by that which is beyond Him (if, indeed, there be anything beyond Him), and how there is an absolute necessity [on their theory] to conceive of many Fathers, and many Pleromas, and many creations of worlds, beginning with one set and ending with another, as existing on every side; and that all [the beings referred to] continue in their own domains, and do not curiously intermeddle with others, since, indeed, no common interest nor any fellowship exists between them; and that there is no other God of all, but that that name belongs only to the Almighty;-[all these arguments, I say, ] will in like manner apply against those who are of the school of Marcion, and Simon, and Meander, or whatever others there may be who, like them, cut off that creation with which we are connected from the Father. The arguments, again, which I have employed against those who maintain that the Father of all no doubt contains all things, but that the creation to which we belong was not formed by Him, but by a certain other power, or by angels having no knowledge of the Propator, who is surrounded as a center by the immense extent of the universe, just as a stain is by the [surrounding] cloak; when I showed that it is not a probable supposition that any other being than the Father of all formed that creation to which we belong,-these same arguments will apply against the followers of Saturninus, Basilides, Carpocrates, and the rest of the Gnostics, who express similar opinions. Those statements, again, which have been made with respect to the emanations, and the Aeons, and the [supposed state of] degeneracy, and the inconstant character of their Mother, equally overthrow Basilides, and all who are falsely styled Gnostics, who do, in fact, just repeat the same views under different names, but do, to a greater extent than the former, transfer those things which lie outside of the truth to the system of their own doctrine. And the remarks I have made respecting numbers will also apply against all those who misappropriate things belonging to the truth for the support of a system of this kind. And all that has been said respecting the Creator (Demiurge) to show that he alone is God and Father of all, and whatever remarks may yet be made in the following books, I apply against the heretics at large. The more moderate and reasonable among them thou wilt convert and convince, so as to lead them no longer to blaspheme their Creator, and Maker, and Sustainer, and Lord, nor to ascribe His origin to defect and ignorance; but the fierce, and terrible, and irrational [among them] thou wilt drive far from thee, that you may no longer have to endure their idle loquaciousness.” Chapter 31.1
Irenaeus was not shy about calling out the heretics. He understood their heresies well and knew the damage they caused the Church. May we understand the heresies of our time, know the damage they cause the Church and be empowered by God’s Spirit to call them out. More about that in future studies.