Eusebius's account of the early church is one of the most valuable sources of Ecclesiastical history that we have. Sadly Eusebius is not always a particularly reliable narrator. Although he shows more skepticism than some might expect, he ultimately spends a lot of time giving extensive accounts of the deaths of various individual martyrs when accounts of theology or even politics would probably be more highly valued by the modern day scholar.
As I read, I took some notes which I've included below. If you're interested in the text, they might be worth a look - and if you're planning to read it in the future, they point you in the direction of some of the more interesting things to look out for. I focus mainly on Eusebius's accounts of theology.
Book One - An account of the general history of the Old Testament. Eusebius also makes the claim that the pre-covenant Hebrews were adherents of the true faith (i.e. Christianity), and that figures such as Abraham were Christians in practice and essential belief, albeit without Jesus Christ. Josephus is relied on heavily as a historical source, as Eusebius had a limited command of Hebrew. This chapter also quotes a letter purpotedly written by Jesus Christ to King Abgar V of Edessa. Scholarship is divided as to whether the letter has any historicity, but it's a fascinating artifact nonetheless.
Book Two - This book tells the story of the Apostles and the Apolistic Fathers as far as the end of Acts (and a little bit further). Eusebius spends a reasonable amount of time discussing James, the brother of Jesus, about whom sadly little is written. Eusebius relies heavily on Josephus as before, as well as on Philo and Hegesippus. By some historical tragedy, the works of Hegesippus have been lost. His chronicles of the early Church were written in the second century and would have been an invaluable source of history from this period if only they had survived. The quotations in Eusebius's work are the largest passages still extant. Another interesting point of note is Eusebius's acceptance that the author Luke-Acts is the same individual as Luke of Colossians 4:14 (or at the very least, somebody who travelled with Paul). Eusebius is sometimes skeptical of the authorship of Biblical books so this initially took me by surprise. Eusebius also puts forward the historically very popular idea that the destruction of Jerusalem under Vespasian was a result of the God's anger towards the Jews for killing Jesus - a view that in its expanded form says that Jews being cast out into the diaspora is their punishment for killing Christ.
Book Three - Eusebius begins by discussing the historicity of the Epistles (concluding that Hebrews and 2 Peter are likely not authentic). Next, he quotes extensively from Josephus to document the history of the Siege of Jerusalem. Eusebius goes on to discuss the historicity of the Johanine books concluding the following:
Of John’s writings, besides the gospel, the first of the epistles had been accepted as unquestionably his by scholars both of the present and of a much earlier period: the other two are disputed. As to the Revelation, the views of most people to this day are evenly divided. At the appropriate moment, the evidence of early writers shall clear up this matter too.
He then goes on to discuss the historicity of various books (including some apocryphal and lost works which I hadn't previously heard of), concluding that some are legitimate texts and some are not:
It will be well, at this point, to classify the New Testament writings already referred to. We must, of course, put first the holy quartet of the gospels, followed by the Acts of the Apostles. The next place in the list goes to Paul’s epistles, and after them we must recognize the epistle called 1 John; likewise 1 Peter. To these may be added, if it is thought proper, the Revelation of John, the arguments about which I shall set out when the time comes. These are classed as Recognized Books. Those that are disputed, yet familiar to most, include the epistles known as James, Jude, and 2 Peter, and those called 2 and 3 John, the work either of the evangelist or of someone else with the same name. Among Spurious Books must be placed the ‘Acts’ of Paul, the ‘Shepherd’, and the ‘Revelation of Peter’; also the alleged ‘Epistle of Barnabas’, and the ‘Teachings of the Apostles’, together with the Revelation of John, if this seems the right place for it: as I said before, some reject it, others include it among the Recognized Books. Moreover, some have found a place in the list for the ‘Gospel of Hebrews’, a book which has a special appeal for those Hebrews who have accepted Christ. These would all be classed with the Disputed Books, but I have been obliged to list the latter separately, distinguishing those writings which according to the tradition of the Church are true, genuine, and recognized, from those in a different category, not canonical but disputed, yet familiar to most churchmen; for we must not confuse these with the writings published by heretics under the name of the apostles, as containing either Gospels of Peter, Thomas, Matthias, and several others besides these, or Acts of Andrew, John, and other apostles. To none of these has any churchman of any generation ever seen fit to refer in his writings. Again, nothing could be farther from apostolic usage than the type of phraseology employed, while the ideas and implications of their contents are so irreconcilable with true orthodoxy that they stand revealed as the forgeries of heretics. It follows that so far from being classed even among Spurious Books, they must be thrown out as impious and beyond the pale.
The really interesting thing in this discussion is how the New Testament canon remains largely uncodified. I previously imagined that by Eusebius's day (the fourth century), the canon of the New Testament would have been reasonably well established. Although the Gospels and Acts are unquestionably accepted by Eusebius as divine, the Epistles seem to be still under debate, and he very openly speculates that Revelation may not be an inspired text. It seems only Matthew through Acts were conclusively accepted canonical texts in his period.
Eusebius goes on to describe a little of the beliefs of an early Christian sect that he calls 'Ebionites'. Interestingly, he asserts that they only acknowledge the 'Gospel of the Hebrews' as divine revelation, despite otherwise believing in Christ. At the end of the chapter, Eusebius discusses Papias of Hierapolis in a somewhat critical manner (he at one point refers to him as a man of very small intelligence). He does however, quote some very important material from Papias's work concerning the authorship of the gospels of Matthew and Mark:
In his own book Papias gives us accounts of the Lord’s sayings obtained from Aristion or learnt direct from the presbyter John. Having brought these to the attention of scholars, I must now follow up the statements already quoted from him with a piece of information which he sets out regarding Mark, the writer of the gospel: This, too, the presbyter used to say. ‘Mark, who had been Peter’s interpreter, wrote down carefully, but not in order, all that he remembered of the Lord’s sayings and doings. For he had not heard the Lord or been one of His followers, but later, as I said, one of Peter’s. Peter used to adapt his teachings to the occasion, without making a systematic arrangement of the Lord’s sayings, so that Mark was quite justified in writing down some things just as he remembered them. For he had one purpose only – to leave out nothing that he had heard, and to make no misstatement about it.’ Such is Papias’ account of Mark. Of Matthew he has this to say: Matthew compiled the Sayings in the Aramaic language, and everyone translated them as well as he could. Papias also makes use of evidence drawn from 1 John and 1 Peter, and reproduces a story about a woman falsely accused before the Lord of many sins. This is to be found in the Gospel of the Hebrews. This is all that it is necessary to add to the passages I have quoted.
Sadly, Papias's work is lost.
Book Four - In this book, Eusebius writes briefly about the circumcised leaders of the early church, after Paul, Peter, James etc. before going on to briefly describe Bar Kokhba revolt and the suppression of the Jews that followed it. He also stops to denounce the gnostics and one or two other secret cults, albeit briefly and without sustained reference to their theology. He spends a little more time discussing Marcion, which is a fascinating topic, but the treatment is still ultimately brief. A good deal of the chapter is given over to discussing the life of Polycarp, who proved very hard to kill.
When he had offered up the Amen and completed his prayer, the men in charge lit the fire, and a great flame shot up. Then we saw a marvellous sight, we who were privileged to see it and were spared to tell the others what happened. The fire took the shape of a vaulted room, like a ship’s sail filled with wind, and made a wall round the martyr’s body, which was in the middle not like burning flesh but like gold and silver refined in a furnace. Indeed, we were conscious of a wonderful fragrance, like a breath of frankincense or some other costly spice. At last, seeing that the body could not be consumed by the fire, the lawless people summoned a confector to come forward and drive home his sword. When he did so there came out a stream of blood that quenched the fire, so that the whole crowd was astonished at the difference between the unbelievers and the elect. To the elect belonged this man, the most wonderful apostolic and prophetic teacher of our time, bishop of the Catholic Church in Smyrna. For every word that he uttered was and shall be fulfilled.
The remainder of the chapter is given over to quoting and occassionally briefly discussing various epistles and other documents written by figures from the early chuch.
Book Five - Other historians have confined themselves to the recording of victories in war and triumphs over enemies, of the exploits of the commanders and the heroism of their men, stained with the blood of the thousands they have slaughtered for the sake of children and country and possessions; it is peaceful wars, fought for the very peace of the soul, and men who in such wars have fought manfully for truth rather than for country, for true religion rather than for their dear ones, that my account of God’s commonwealth will inscribe on imperishable monuments; it is the unshakeable determination of the champions of true religion, their courage and endurance, their triumphs over demons and victories over invisible opponents, and the crowns which all this won for them at the last, that it will make famous for all time.
This quotation, which is part of the introduction of the book, is followed by a prolonged quotation listing the deeds of various martyrs.
Later in the book, there is an interesting discussion on the words of Iranaeus and the composition of the gospels:
Matthew published a written gospel for the Hebrews in their own tongue, while Peter and Paul were preaching the gospel in Rome and founding the church there. After their passing, Mark also, the disciple and interpreter of Peter, transmitted to us in writing the things preached by Peter. Luke, the follower of Paul, set down in a book the gospel preached by him. Lastly John, the disciple of the Lord, who had leant back on His breast, once more set forth the gospel, while residing at Ephesus in Asia.
Ultimately however, this book consists mostly of accounts of martyrdom. Despite very brief treatments of a few historical questions as well as a few short accounts of some of the beliefs of Marcionites, the topic never strays too far from those who died in various unpleasant ways for God.
Book Six - Again, a lot of stories of martyrdom. Origen features prominently in this chapter. One area I found of particular interest was a quotation from Origen's writings on John:
In Book V of his Commentary on John’s Gospel Origen has this to say about the epistles of the apostles:
The man who was enabled to become a minister of the New Covenant, not of the letter but of the spirit, Paul, proclaimed the gospel from Jerusalem, in a wide sweep as far as Illyricum.1 But he did not write to all the churches he had taught; and to those to which he did write he sent only a few lines. Peter, on whom is built Christ’s Church, over which the gates of Hades shall have no power,2 left us one acknowledged epistle, possibly two – though this is doubtful. Need I say anything about the man who leant back on Jesus’ breast, John? He left a single gospel, though he confessed that he could write so many that the whole world would not hold them.3 He also wrote the Revelation, but was ordered to remain silent and not write the utterances of the seven thunders.4 In addition, he left an epistle of a very few lines, and possibly two more, though their authenticity is denied by some. Anyway, they do not total a hundred lines between them.
Book Seven - I took no notes on this chapter while I was reading.
Book Eight - Here begins the events which occurred during Eusebius's life time. He begins by describing in highly emotive language the persecution of Christians under Diocletian. Next, in Eusebius's typical style, there are a number of extended accounts of the deaths of martyrs. He goes on to very briefly describe the power struggle that ended with Constantius as emperor in the West. He then launches a scathing attack on Maximian (Contantius's co-emperor in the East) including accusing him of witchcraft. Constantius dies in York and his son, Constantine, is declared emperor.
Book Nine - Another Max, Maxentius flip flops between being at one moment acceptable and the next very evil. In the previous book, it was established that he was persecuting Christians in Rome, and pretending to the position of ruler. However, ultimately he decides to stop. In this book, he picks it up again. Eusebius then switches focus and briefly describes the Armenian war and its great cost. He also laments that it happened - as the Armenians were (and still are) a Christian people. This is also the chapter in which Constantine begins to play a major role in the narrative with Eusebius referring to him with extremely positive language as he describes his triumph over Maxentius.
The senior in imperial rank and position, Constantine, was the first to feel pity for the victims of tyranny at Rome. Calling in prayer on God in heaven and on His Word, Jesus Christ Himself, the Saviour of all, to come to his aid, he advanced at the head of all his forces, intent on recovering for the Romans the liberty of their ancestors.
Book Ten - This book is given over to exulting Jesus Christ and Emperor Contantine. It's not always exactly clear which one he's exulting. The line is often blurred between the two and I suppose maybe that's kind of the point.
For which of the kings who ever lived achieved such greatness as to fill the ears and mouths of all men on earth with his name? What king established laws so just and impartial, and was strong enough to have them proclaimed in the hearing of all mankind from the ends of the earth and to the furthest limit of the entire world? Who made the barbarous, uncivilized customs of uncivilized races give place to his own civilized and most humane laws? Who was for whole ages attacked on every side, yet displayed such super-human greatness as to be for ever in his prime and to remain young throughout his life? Who so firmly established a people unheard-of from the beginning of time that it is not hidden in some corner of the earth but is found in every place under the sun? Who so armed his soldiers with the weapons of true religion that their souls proved tougher than steel in their battles with their opponents? Which of the kings wields such power, leads his armies after death, sets up trophies over his enemies, and fills every place, district, and city, Greek or non-Greek, with votive offerings – his own royal houses and sacred temples, like this cathedral with its exquisite ornaments and offerings?
Most of the chapter is like that. It finishes with quotations from various edicts relating to Christianity issued by Constantine.