Sorry for being vague. I meant why were they important, and how much influence did they have over Christian thought down the road. And by Eusebius, I meant Eusebius of Caesarea.
Very briefly, Irenaeus is important as the most significant theologian of the second century. He was the first person to state many ideas that would become central to Christianity. It's uncertain how influential he personally was, though. Few patristic writers mention him, and it is likely that he was articulating ideas that were common to many people at the time, rather than that he was a true innovator.
With Eusebius, he is significant as the author of the first (extant) church history after Acts, so he's an important historical source. He's less significant doctrinally - he was a rather half-hearted supporter of Arius - but he did help to create the legend of Constantine and his conversion.
Here are two summaries I wrote about these two figures some time ago:
Irenaeus of Lyon
c. 140-200
Irenaeus is easily the most powerful and interesting theologian of the second century, but his best work is mired in tedious or trite casuistry, and seems to have made very little impact on his immediate successors. In modern times, Irenaeus has become increasingly popular, and a number of theologians have sought to rehabilitate some of his ideas.
Life
Irenaeus tells us (
Adversus haereses III 3, and in his letter to Florinus in Eusebius
Historia ecclesiastica V 20) that in his youth he spent hours at the feet of Polycarp of Smyrna. Polycarp probably died in around 155, so Irenaeus was probably born some time in the second quarter of the second century, in Asia Minor.
He later moved to Gaul, and joined the church at Lyon, which seems to have had many immigrants from Asia Minor in its congregation. In 177, this church suffered a severe persecution by the state. Irenaeus survived, and was sent to the bishop of Rome with a letter describing the heroism of those who suffered, some of which is preserved in Eusebius Historia ecclesiastica V 4. This letter describes its bearer as a presbyter, a title that may still have had quite a wide range of reference. Irenaeus was later remembered as a bishop, but seems never to have officially taken this title.
Irenaeus wrote several works. The only major one to have survived is
De detectione et eversione falsae cognominatae agnitionis, normally referred to as
Adversus haereses, a work in five volumes written in around 180 in response to the gnostic systems that Irenaeus encountered in Gaul and Rome, especially those of the Valentinians. The work is an important source for early gnosticism, and it is in rebuffing the ideas of his opponents that Irenaeus introduces the positive teachings for which he is celebrated. However, most of the original Greek is lost, and it survives only in a Latin translation.
The only other work to have survived is the
Demonstratio apostolicae praedicationis, which exists only in a Syriac translation. This work does not add appreciably to the theology found in
Adversus haereses.
Irenaeus is remembered as a martyr, but what became of him is unknown, and he is thought to have died some time near the end of the second century. Although he receives much space in Eusebius
Historia ecclesiastica, and was clearly remembered fondly, he seems to have had no disciples of note.
Thought
Irenaeus is hard to assess as an original theologian. Many of his ideas stand out in striking contrast to those of his contemporaries and successors, but whether this is because they are truly original or because they are taken from other, lost writers, is impossible to tell. The apologist Theophilus of Antioch, in particular, seems to have much in common with Irenaeus.
God
The element of gnosticism which most distressed Irenaeus was the way Gnostic theologians divided God up by separating the Old and New Testament Gods, or speaking of different Aeons within the fullness of divinity. In opposition to this, Irenaeus places great emphasis on Gods unity, and on the unity of salvation history, which is all the work of the one God. In common with many Middle Platonists, he stresses Gods greatness to the point of transcending ordinary categories. Irenaeus claims that only God truly exists: the world has only a secondary kind of existence, sustained from moment to moment by God. Irenaeus often returns to the image of God holding the world in the palm of his hand, and in contrast to Justin Martyr, he affirms that God actually contains the whole universe within himself.
Irenaeus conception of the Trinity is also quite different from Justins. It revolves in part around the Father-Son theology of the Fourth Gospel, rather than the Logos theology of the preface to that gospel. He thinks of the Son as the Father made visible, stressing their unity. Another common image is that of the hands of God the Son and the Holy Spirit. This suggests Gods immediate relationship to the world he needs no tools to work on the world, just his two hands. So the Son and Spirit are very close to the Father, but still distinct from him, just like the two hands of a human being. As this image suggests, Irenaeus is interested in the Trinity primarily in the context of Gods dealings with the world, rather than as a matter of the relations between the Persons themselves. This emphasis on the economic Trinity would be less important in later centuries, although some theologians, such as Rupert of Deutz, would continue to defend it in the Middle Ages.
Humanity
Irenaeus begins with the claim of Genesis 1:26 that God intends to make humanity in his own image and likeness, but interprets it in a striking way: God makes humanity in his image straight away, but his likeness is something that they must attain gradually. In fact this process takes the whole of history. So Adam and Eve are children, perhaps physically, but certainly morally. Their sin is not a well-planned rebellion but a childish mistake.
God always intended the perfecting of humanity to be a long process, involving the coming of Christ. Adams sin changed the nature of this process but not its basic length and format. So even if there had been no sin, there would still have been an incarnation, a notion later repeated by Alexander of Hales. So the whole of history since the Fall has been planned by God to help humanity mature. Suffering and death are intended to help humanity learn about good and evil by experience, and to learn to choose what is right freely. Irenaeus likens death to the whale that swallowed Jonah: without it, he would never have repented and obeyed God of his own free will. But it is still a terrible thing, and Irenaeus repeatedly speaks of corruptibility and mortality as the effects of sin that the coming of Christ reverses.
Clearly then, Irenaeus offers a quite different approach to humanity and the world than that of Augustine, which became the dominant view in western Christianity. Suffering is not caused by the misuse of free will, but is sent by God and serves a good purpose. And humanity is not a mass of damnation: it is a petulant child that is punished, not out of a sense of justice or retribution, but for its own correction and maturing. Despite the later dominance of Augustinianism, some of these ideas would appear in western authors such as Hugh of St Victor.
Irenaeus also applies these ideas to the individual as well as to humanity as a whole. If a person is to mature morally and spiritually, the first step is to realise that she is Gods creation and must place herself wholly in his hands. This means accepting Gods timetable, and not trying to become an adult too early. Sin, conversely, is basically the misplaced desire to have it all now. It is impatience, and a childish refusal to submit to God. Irenaeus uses the image of a clay figure being moulded: if it is to become perfect it must remain pliable in the hands of the potter, and not harden prematurely.
Christ and salvation
God has planned the whole of history to help humanity become mature, but the focus of the process is the coming of Christ. Irenaeus christology is orthodox by later standards: Christ is God made visible, but he is also a human being, formed from clay like the rest of us.
The fact that the creator has become joined to the creation begins the process of salvation. It is as though creation has been infected with Gods nature. Divinity begins to spread throughout the created order. Before, humans were mortal and corruptible, but now they can take on the divine qualities of immortality and incorruptibility. And this is the beginning of true maturity for humanity. In fact, it is the beginning of the divinisation of humanity. The fundamental distinction between creator and creation is never abolished, but human beings can nevertheless share in the divine qualities and the divine life. This is what it means to become made in Gods likeness, and the process never reaches an end. The immensity of God means that there is no end to the faithfuls pressing forward, becoming more like him every day. Here, Irenaeus anticipates the views of Gregory of Nyssa.
Irenaeus thus thinks of salvation as revolving around the incarnation of Christ, rather than his death or resurrection. These still play a central part in salvation, but only as part of Christs career. Irenaeus thinks of that career as a systematic reversal of Adams. Where Adam was disobedient, Christ is obedient, and the supreme test for each of them involves a tree. In fact, Christ passed through the whole of human life, reclaiming and divinising it as he went a process known as recapitulation. Irenaeus is therefore compelled to argue that Christ did not die until he was quite old, a view otherwise unattested during this period except (perhaps) in Melito of Sardis.
This way of thinking about salvation, as based on the incarnation, would be central to patristic theology, especially in the east. It was later repeated by Athanasius, and lies at the basis of the thought of later Orthodox theologians such as Maximus the Confessor, Simeon the New Theologian, and Gregory Palamas. In the west, however, it would be eclipsed by a more judicial soteriology, focusing on the death of Christ rather than his life.
Eusebius of Caesarea
c. 260-340
Eusebius of Caesarea was a major ecclesiastical figure in the early fourth century, remembered for his defence of Origen, his attempts to find a compromise in the early stages of the Arian controversy, and above all, his pioneering history of the church.
The date and place of Eusebius birth are unknown, although it is usually dated to around 260. He seems to have spent most of his life in Caesarea, in Palestine, where he became associated with the philanthropist and scholar Pamphilus. Pamphilus had built up an important library around the collection that Origen had left in the city, and he and Eusebius continued the research on the text of the scriptures that Origen had pioneered with his
Hexapla.
In 307 Pamphilus was imprisoned and tortured for his faith. However, he managed to co-operate with Eusebius on a now-lost
Apologia pro Origene, in response to the criticisms of the great mans methods and theology that were coming from people like Lucian of Antioch and Methodius. In 309 Pamphilus was beheaded. Eusebius inherited the charge of the library, and was bishop of the town by 315.
Eusebius became involved in the burgeoning Arian controversy in the early 320s, when Arius, fresh from his condemnation by Alexander of Alexandria, sought asylum in Caesarea. Eusebius criticised Alexander for misrepresenting Arius views, and tried to effect a reconciliation between them. He seems not to have held similar theological views to Arius; rather, he believed that God is intrinsically unknowable, as are the relations between the Father and the Son. But he believed that Arius should not have been condemned for his understanding of the matter.
Eusebius was a prominent figure at the council of Nicaea in 325, where he sat at the right hand of Constantine, and where he presented a conciliatory creed that he hoped would unite both sides of the dispute. His creed was rejected, and Eusebius reluctantly subscribed to the Symbol that the council produced. He then wrote a letter to his church, explaining his motives for doing this, and arguing for a rather strained interpretation of the Symbol, according to which the
homoousios meant only that the Son is the greatest thing other than the Father, making the Symbol compatible with Arianism.
Eusebius was then involved in a controversy with the anti-Arian Eustathius of Antioch. After mutual accusations of Arianism and Sabellianism, Eusebius took part in the council which deposed Eustathius in 331. He was offered the vacant see, which he refused. He then took part in the synods at Caesarea and Tyre against Athanasius. He died between 337 and 340.
Eusebius wrote several works, not all of which survive. His commentary on Isaiah was scholarly and influential, with later commentators such as Jerome making extensive use of it. However, by far his most important work is the monumental
Historia ecclesiastica, describing the history of the church from the time of the apostles to Constantine. This was not the first work of its kind, since Julius Africanus
Chronicon preceded it, and indeed Eusebius used Julius work as a source for his own. However, since the
Chronicon is lost, Eusebius text is the earliest extant church history after the Acts of the Apostles. Despite its thinness regarding western writers, this work is the primary source for the history of the church until the conversion of Constantine, and for the lives of most of its important figures. Eusebius
Vita Constantini is also important, although it is a panegyric rather than a history; but together with his self-serving letter to the church at Caesarea it is the primary source for the council of Nicaea.
And I must say, after a quick search of wikipedia, I'm surprised by the sheer number of early Christian bishops and theologians. There's over a dozen of them!
There are a lot more than that! The two entries I copied above are from an encyclopaedia of patristic and medieval theologians that I'm working on. Here is the list of entries from before Augustine of Hippo (taking that as a working definition of "early"):
Clement of Rome
Ignatius of Antioch
Quadratus
Aristides of Athens
Basilides
Carpocrates
Hermas (Shepherd)
Valentinus
Polycarp of Smyrna
Marcion
Justin Martyr
Athenagoras
Tatian of Syria
Melito of Sardis
Theophilus of Antioch
Irenaeus of Lyons
Marcus Minucius Felix
Noetus
Clement of Alexandria
Sabellius
Bardaisan of Edessa
Tertullian
Hippolytus of Rome
Julius Africanus
Origen
Novatian
Stephen I (Pope)
Cyprian of Carthage
Dionysius of Alexandria
Paul of Samosata
Firmilian of Caesarea
Gregory Thaumaturgus
Methodius of Olympus
Lucian of Antioch
Lactantius
Alexander of Alexandria
Arius
Eustathius of Antioch
Aphraates of Persia
Eusebius of Caesarea
Eusebius of Nicomedia
Pachomius
Marius Victorinus
Donatus of Carthage
Antony of Egypt
Basil of Ancyra
Acacius of Caesarea
Hilary of Poitiers
Aetius
Lucifer of Cagliari
Titus of Bostra
Athanasius
Ephraim the Syrian
Marcellus of Ancyra
Basil of Caesarea
Ulfilas
Damasus (Pope)
Cyril of Jerusalem
Gregory of Nazianzus
Nemesius of Emesa
Apollinarius of Laodicea
Eunomius of Cyzicus
Gregory of Nyssa
Ambrose of Milan
Didymus the Blind
Evagrius Ponticus
Macarius Magnes
Pseudo-Macarius
Tyconius
Epiphanius of Salamis
Jovinian
John Chrysostom
Pelagius
Theophilus of Alexandria
Rufinus of Aquileia
Innocent I (Pope)
Jerome
Orosius of Braga
Leporius
Theodore of Mopsuestia
- and that isn't a complete list, by any means.
Yes, for example Revelation 13:3, 14; 17:10 are references to the belief, common in the late first century, that Nero wasn't dead at all but had escaped into the east, where he was raising a great army, and would return to reconquer Rome.
And I agree with most of what you have said but struggle with this statement for the following reason:
If we confront a situation where there are multiple answers which are all mutually exclusive, along with an alternative that none of the answers is meaningful, then we have to ask whether there is a reason that multiple answers exist.
I.e. the fact that we know multiple false answers have been generated implies that there is something happening which inherently gives rise to the generation of false positives.
To create an analogy, if we have 50 children asked to state the solution to an equation, we will get 50 answers. If we get 50 different answers it strongly implies that there is a common underlying reason for the fact that they are different - perhaps that the question is simply too hard for this ability range or age group. In this case it is very likely that none of the answers are correct - in fact it is very possible that the equation does not admit of a solution - and we can deduce this directly from the disparity of the proposed solutions.
In a similar way, the sheer variety and differentiation of specific deities, as well as the fact that all of those that are susceptible to disproof (e.g. we can go and look on Mt Olympus for Zeus) have been disproved, leads to a logical supposition that inventing 'gods' (with a lower case 'g') is a natural human activity and has an underlying natural cause, within human society or psyche, even if we are not 100% sure what that cause is.
In that case the logical deduction is that each specific 'God' is extremely unlikely to be correctly defined, with the default assumption being that God either does not exist or exists in a form not represented by any specific religion.
None of that is a
logical deduction. It's just an inference to the best explanation, and one which is highly uncertain, I'd say. If different people give different answers to a question, it's true that we'd have to conclude that at least most of them don't know the answer, but I don't see that it would be reasonable to suppose that they are all ignorant for the same reason. And it wouldn't follow that all of the answers are equally probable (or improbable). If forty-nine children give different figures as answers to the difficult sum, and one child says "I don't know what the answer is", is his reply just as likely to be incorrect as that of the others? We can't conclude that a question is inherently unanswerable just because no-one has given a correct answer to it. And we
certainly can't conclude that it's inherently unanswerable just because many different answers have been given to it, and we're not sure which, if any, is correct.
I think we need to be very careful about how we reason in this sort of thing. It's not possible to have the kind of certainty associated with logical deductions, as you imply.
And the apostles were Greeks?
Miles Teg has commented rightly on that, but I'd add that (a) it depends on what you mean by "the apostles" and (b) it depends on what you mean by "Greeks", too. Paul was an apostle (on at least some definition) and he spoke Greek, apparently as a native. However, I don't see what this has to do with anything. You said that the gospels had been translated into Greek from Aramaic (or at least that is what you implied). I answered that the gospels were originally written in Greek. I don't see what the nationality or linguistic group of the apostles has to do with this, given that they didn't write the gospels.
Very odd. You've just explained yourself that it is: there's an innumerable amount of NT citations even in premedieval times; with modern critical text assessment it's possible to arrive at a more or less accurate source text. But the only reason for this is that this "source text" has become corrupted (and in fact is non-existent).
Instead of explaining how absolutely wrong I am, it would behoove you to simply say "Yes, these texts have become corrupted, but..." (etc. A minor difference perhaps, but nevertheless an essential one.)
What exactly is it you're trying to argue for? Here, you seem to be saying only that (a) we do not possess the original, autograph manuscripts as written by the pen of Matthew etc, and (b) the various scribes who later copied these texts, whose work we are dependent upon for reconstructing said autograph manuscripts, sometimes made errors. Well, no-one's disputing that!
But that's
not what you claimed before. You said that Christians had
altered and
falsified the texts,
for doctrinal reasons. That is definitely not the same thing as a few scribal errors - it is deliberate alteration for doctrinal motives. If you're now giving up this claim, then that's good, although it would be helpful if you said so explicitly. If you're still sticking by this claim, then it's still incumbent upon you to give some evidence for it. Just insisting that I give evidence
against it isn't really enough.
One of the Greek scholars argued that "give us this day our daily bread" would be better rendered as "give us tomorrow's bread today". The nascent heresy was quashed on the spot.
Damn those Craspanians! It's the heresy that will not die!