Completely insane.
Christians have a number of beliefs that defy all logic...
The correctness of the information in the Bible is of central importance to Christian faith. One reason it is often said to be factual is because it is the Word of God, and, therefore, must be true. Also, Christian scholars point out that the Bible portrays many factual historical events, and, therefore, the religious aspects of those events must truly have happened as well.
God is said to have written the Bible through the hands of others. Their names are recorded as the authors of the text. No one ever thinks to wonder why it is that we trust these men to tell the truth...that they were really communicated to by God. Human history is full of people who have claimed to speak to God but have been proven to be fakes. In this case, we are not only taking the authors' word for it, but also the word of the translators and librarians of the early Catholic church. The earliest manuscripts of the books of the Bible are dated at around 400 AD, which leaves over 300 years for falsifications to have occurred. Yes, this date is subject to debate, but Sir Frederic G. Kenyon, formerly Director and Principal Librarian of the British Museum, summarized the evidence for the validity of the new Testament as follows:
"In no other case is the interval of time between the composition of the book and the date of the earliest extant [presently existing] manuscripts so short as in that of the New Testament. The books of the New Testament were written in the latter part of the first century; the earliest extant manuscripts (trifling scraps excepted) are of the fourth century -- say, from 250 to 300 years later."
I found that quote on a Christian's page, by the way. If you want me to believe that a guy was really God and that he "died for my sins" (whatever that means) and rose from the dead, I want the paper that came out the next day; I want a sworn statement from at least 3 witnesses IN WRITING; I want some pictures, damn it! Seriously: if I am expected to believe that a miracle happened, then it must be more irrational to deny the evidence than it is to deny the miracle. Christianity has never come close to meeting this criteria.
Furthermore, assuming that these men are really reporting the Word of God, how do we know that God is telling the truth? The only real reason to believe it is because you believe the people who told it to you, and they believed the people who told it to them, and so forth.
The historical content of the Bible is well established. What is not well established are the magical events that take place in the context of those historical events. For instance, the Jews supposedly blew a magical horn which brought down the walls of Jericho. Some people have said that this is proof to the validity of the Bible because archeologists have shown that the city was destroyed at about the time the Bible indicates. No one said, however, that the Jews destroyed the city via a magical musical instrument; this part is clearly myth.
To put you in proper perspective, let's consider classical mythology. In particular, the Trojan war. In classical mythology, the war is over a woman, Helen of Troy, and several gods and goddesses aid the soldiers in battle. It is well established that there was a Trojan War. Does that mean that it was fought solely over a woman or that dieties aided the living in the battle? Of course not. To say that it did would make you suitable for committal. Imagine, you are in high school English class and Mrs. Whatsername has just had you read the Iliad. Karl Inbred comes in and says, "Gee whiz, I sure didn't know that there were all sorts of gods and goddesses that will help good old boys like me in a war! I think I'll go join the army now!" You'd laugh at him. Let's say the president just read the Iliad and comes on the TV saying, "I am sure our soldiers will be just fine in the upcoming battle because Apollo will make their aim true and Athena will give them expert strategical advice." The guy would be removed from office for his mental disturbance.
The only real reasons to believe in the validity of the Bible are faith and protection of one's subjective reality. Faith is really a matter of wanting to believe something because it is comforting for you on some level. We are scared of death, for instance. Christianity saves us the discomfort of being dead. Christians are typically so invested in their beliefs that to denounce them would be to topple their entire world and destroy the complex rationalizations they have for many of their actions and their explanation for why they are "good people."
Another great logical mistake Christians make is to believe that Christianity is correct because their conscience says that Christian values are right. Your conscience is a side effect of your early phenomenal experience. It is your most deeply internalized values. It does not come from some mystical source, but from your parents, teachers, and society at large. You could easily have been taught different things and then your conscience would say that those things were right. Contrast, for instance, Mangaia (southernmost of the Polynesian Cook Island chain) with certain Irish islands. The Catholics think sex is wrong (of course it is!) and the Mangaians think it is wonderful (of course it is!).
Yet another brain foible of Christians is that you don't have to believe everything in the Bible to be a "good Christian." This is dead wrong. The Bible is clear about women, sex, homosexuality, and slavery. If you are female, if you like sex, if you are gay, lesbian or bisexual, if you are the descendant of slaves (and feel slavery is wrong), you have no business being a Christian. I'll explain later.