Who exactly considered this verse (1 John 5:7) not canon and why?
MagisterCultuum already answered this - I think hardly anyone considers it authentic today, because it only appears in late and marginal manuscripts. In addition to this, the theology expressed in the line is entirely anachronistic for the period when 1 John was written.
Well, here's my question, if the Bible is NOT infallible, what good reason is there to believe it?
You can answer that for yourself. I take it that you go to church regularly and you listen to the preacher expecting to hear something worthwhile, but you don't consider him to be infallible. Why, then, do you bother to listen to him? Presumably because you think that he's got a lot of relevant knowledge and experience and knows what he's talking about. You don't have to think he's infallible to think that. And the same could be said for anyone else you consider authoritative, such as your teachers.
Similarly, someone can perfectly reasonably think that the Bible is an important authority without thinking that it's infallible. And many people do think this.
The problem with your question is that you frame it simply in terms of "believing the Bible" or "not believing the Bible". But it's not as simple as "believing the Bible" or not. The Bible is a complex text. You can believe that some bits of it are correct and others aren't. You can also believe that one and the same bit is correct in some ways but not in others. A person who thinks that the Bible is authoritative, but not infallible, is likely to take a complex attitude to it of this kind. To ask whether and why such as person "believes the Bible" is to ask the wrong question, because it's not as simple as that.
I don't get how you can say that the Bible is not infallible, but is still inspired.
Why would "inspired" entail "infallible" anyway? The word "inspired" can mean all sorts of things. People apply the word "inspired" to everything from poetry to football. It doesn't mean they think these things are infallible. At most it means that someone acts in a way that calls to mind the supernatural, as if something superhuman is acting through them. That's what it meant in antiquity. You know the
Iliad is a good example: it begins with an invocation to the Muses, and the author writes as if the Muses are speaking through him. (In fact he consistently adopts a divine point of view throughout the book.) The ancient Greeks all agreed that the
Iliad was an inspired text. I don't think they regarded it as infallible, though - not because they asked whether it was infallible and concluded that it wasn't, but because the question didn't occur to them. "Inspired" meant something about how the text was written, the sorts of things it talked about, the kind of wisdom and insights it imparted, and the viewpoint it expressed. It didn't mean a formal state of inerrancy.
Similarly, a liberal Christian can perfectly reasonably say that the Bible is inspired in the sense that its authors had great insight into divine things, they understood God and such things in a very profound way, and they articulated great truths that remain vital and authoritative today - without having to say that the Bible is infallible. There's nothing inconsistent about that.
Its a form of cherry picking, as far as I see it, and allows you to effectively choose which doctrines you like and which doctrines you don't like, and just follow the ones you like. I guess you can argue tthat this is what is done by all Christians anyway, but that certainly isn't the justification we use, and it (Picking and choosing) does not seem like a good basis on which to build a theology, at least not to me.
We all pick and choose. Why do you choose to be a Christian rather than a Buddhist or a Hindu or a Wiccan? Why, having chosen to be a Christian, do you choose to be a Protestant evangelical rather than a Catholic or a Monophysite or a Kakure Kirishitan? Not because the Bible tells you to, because it's only after you've adopted the viewpoint of an evangelical Christian that you think you've got to do what the Bible tells you to do. You choose the religion you have because it appeals to you in a way that the others don't. That may be because you've been brought up that way, or it may not, but either way, you're still picking and choosing as long as you've consciously thought about your religion and decided to remain in it.
The thing is that you're still viewing alternative traditions from the point of view of an evangelical. An evangelical believes (more or less) that the Bible must be the foundation of all belief. So one should believe whatever the Bible says. From this point of view, the notion of discriminating between different things that the Bible says, and believing some but not others on the basis of extra-Biblical ideas, is abhorrent. But a liberal might believe that the foundation of belief is broader than the Bible alone. They might believe that the true foundation of belief is personal experience, or reason, or a combination of them. Or if they're more Catholically minded they might think that the church's teaching is the true foundation of belief - or if they're Orthodox they'd think tradition is the true foundation. Or, if they're a middle-of-the-road Anglican, they might believe that none of these things is the true foundation of belief, but all of them taken equally are, so that one must weigh up the Bible, personal experience, reason, church teaching, and tradition, with no simplistic right answers about which of these trumps the others. The point is, for people with any of these different views, there's nothing problematic about saying they agree with some parts of the Bible and not others, because they just don't accept the basic evangelical idea that the Bible must be the sole foundation and trump everything else. For example, the liberal who disagrees with the author of 1 Timothy when he says that no woman may have authority over a man does so because this sentiment is repugnant to reason and experience. And the liberal doesn't think in the first place that the Bible must necessarily trump reason and experience. Why should it? Why is it more reasonable, or more Christian, to suppose that the Bible must trump reason on this matter? The evangelical accuses the liberal of "cherry picking" the Bible, but the liberal could equally accuse the evangelical of "cherry picking" reason by deciding, in some matters, to believe the Bible instead of reason.
The point is that, from the evangelical's point of view, the liberal is being unforgivably cavalier with the Bible - but from the liberal's point of view, the evangelical is being unforgivably cavalier with reason. (And from the Catholic's point of view he's being unforgivably cavalier with the teaching of the church, and so on.) You can't understand the other person's point of view unless you understand the basic position that he's starting from, and that this is different from your own.
That's true inb my case, yes. But I don't see why you'd be trying to build a theology from the Bible anyway if you didn't already believe in some form of Biblical infallibility.
Authority isn't the same thing as infallibility, as I said before. I'm not sure if there's anyone who tries to make the Bible the
sole authority who doesn't also believe that it's infallible - although I don't see why one couldn't try. But there are lots of people who consider that the Bible is
an authority among others - perhaps even the most important of them - who aren't thereby committed to thinking it infallible.
As an analogy, imagine a historian trying to understand (say) the career of Gladstone. There are an awful lot of sources such a historian might use. Pre-eminent among them would be Gladstone's diary, which he maintained in considerable detail throughout his life. Other sources would include Gladstone's letters to other people, their letters to him, government papers, diaries and letters of other people he knew, newspapers of the day, and so on and so forth. The historian must weigh these different sources against each other and try to work out the truth, to the extent that such a thing can be worked out at all. Now because there is such a wealth of sources, we can know an awful lot about Gladstone with near-certainty, even where sources conflict and we have to decide which ones to follow in different matters. But to construct the story in this way, the historian doesn't have to believe that any of the sources are infallible. He doesn't even have to believe that the most important source, Gladstone's diary, is infallible. (Gladstone could have made mistakes or been outright dishonest, knowing that his diary would one day be used to reconstruct his life.) All he has to believe is that the sources are sufficiently reliable
between them to allow him to reconstruct the story to a tolerable degree of certainty and accuracy.
Similarly, a Christian might think that spiritual information can be found in a variety of sources - the Bible, church tradition, the current teaching of the church, the preaching of particular individuals such as his own pastor or bishop, personal experience, reason, direct revelation from the Holy Spirit, and so on. He might well think that, of these, the most important source is the Bible. But that doesn't mean he has to think that any of them, including the Bible, are infallible - only that, taken together, they're sufficiently authoritative and reliable to gain sufficient understanding of God. In practice I think that this is what an awful lot of middle-of-the-road Christians believe, although they might not articulate it quite like that.
Well, why did the church fathers think that the Old Testament was only infallible after it was translated into Greek? That obviously was not the intent of the authors, who wrote it into Hebrew.
The church fathers weren't much interested in the intent of the authors - that's not how they thought. MagisterCultuum addressed this one well too, but I'd add that I think part of it was deliberate anti-Jewish sentiment. If the Jews were saying that
their collection of ancient Jewish books - in Hebrew, and with the canon settled at Jamnia - was "the" proper one, then the Christians would be all the keener to insist that
their collection of ancient Jewish books - in Greek, and with the canon settled by the "seventy" translators - was "the" proper one. It was a case of Christian canon versus Jewish one.
I think one can draw a reasonable comparison with the more fervent supporters of the King James Bible in America, who think that no other translation is acceptable, and only the AV correctly articulates God's intentions. That also utterly ignores the origins of the text and is basically completely unsupportable in any rational way, but they insist upon it because they're familiar with it, and because they see people they think are theologically mistaken using other translations and therefore associate the ideas with the translations.
As for the Catholic Church, were there any actual Churches other than the Catholic Church back then?
The others have mentioned heretical sects. It's important to recognise that being
heretical (even assuming we accept this anachronistic category) is different from being
a different church. E.g. there were certainly gnostic Christians who were part of the mainstream church - they just had slightly eccentric ideas. So the existence of different doctrinal standards doesn't necessarily entail the existence of independent church organisations.
There certainly were independent church organisations, though. The Marcionites were a major group, founded by Marcion after he got chucked out of the church at Rome for his dodgy ideas. The Montanists were also an important group, founded by a group of prophets whose prophecies were rejected by the mainstream churches. More important than either were the Valentinians, who are traditionally viewed as gnostics, although precisely how gnostic they really were is a matter of great debate. The Valentinian church was large and widespread, so much so that it seems itself to have split into two rival churches, one in the east and one in the west.
Then there was the Novatianist church, created after a schism between rival factions in Rome in the third century, which existed alongside the mainstream church throughout the Roman empire. This was a particularly interesting rival church, because it apparently had no doctrinal disagreement with the Catholics at all. It was just an alternative church structure.
Finally, one of the most important ancient "other" churches was the Donatist church in Africa, which was extremely powerful for much of the fourth century and may even have been the "main" African church for some periods, eclipsing the Catholic church there. The Donatists had rigorous views about ecclesiastical purity and split off from the Catholic church in the early fourth century after a row about whether Catholic bishops who had denied Christ during state persecutions could consecrate new bishops, and whether these new bishops had any authority. Augustine devoted much of his career to arguing against them.
All of these churches were repeatedly denounced by the Catholics, partly on the grounds that all such schismatic churches inevitably fell into heresy even if they weren't heretics to start with, and partly because schisms of this nature was just intrinsically wrong anyway. I think it was Cyprian who said that Christ would treat those who tore apart the church, which was his body, just as harshly as he would treat those who tore apart his body on the cross.
I'm very impressed. I had previously had a low view of his musical tastes after reading an article in which he was rather rude about the blues, but evidently he's not a completely lost cause.
It occurs to me that I don't know - insofar as a definition is possible, how does one define evangelical Christianity?
Is it simply Biblical fundamentalism (using the more-or-less original definition, of seeing the Bible alone as the foundation of theology)? Does it relate to how evangelical Christians "witness"? Who decides these things anyways?
It's notoriously hard to define, and the definitions keep changing (plus the German equivalent just means the same as "Lutheran", which complicates things). I'd say that a good working definition is someone who accepts the
Doctrinal Basis of the Inter-Varsity Christian Fellowship, which I take to be a typical statement of belief from a typical evangelical group. If pressed I would say that the following beliefs are typical of evangelicalism:
(1) The infallibility and sole authority of the Bible.
(2) Penal substitution, i.e. the idea that Jesus was literally punished in the place of sinners.
(3) The necessity of a personal faith in, and relationship with, Jesus for salvation (meaning that anyone without it will be eternally punished).
(4) A very conservative attitude to sexual matters.
(5) A complete lack of ecclesiology and sacerdotalism - i.e. they don't care what church you belong to as long as you believe these things, and they don't think that priests have any special status or abilities, and they don't believe in sacraments.
However, evangelicalism is also a liturgical and social phenomenon (as all varieties of Christianity are) and can't be reduced to a set of beliefs. For one thing, most churches considered Pentecostal would probably also believe all the things listed above, but Pentecostalists are normally considered distinct from evangelicals, and you will certainly see the difference if you go to one each of their churches. Evangelicals have far more practical emphasis on cognitive teaching and exposition of the Bible. They still spend an awful lot of time singing, though.