Do you believe that the Bible is God's word?
I did for three decades, but not anymore.
What made you disbelieve?
I went to seminary, and after two semesters realized the reason why Christians believe the Bible is God's word is ridiculous.
It would be like the Tea Party expelling all democrats, republicans, libertarians, etc... from congress, and then all of them being in full agreement that they recognize the writings of Ayn Rand are the inspired and inerrant word of God. Of course democrats, republicans, libertarians, et al, would disagree, but they're all heretics, so what do they know.
Fact is, it was two decades between Jesus' death before the first word of any of the New Testament books was even penned onto paper. The gospels weren't written until decades after that, at least two of which are clearly plagiarized, and this plagiarism isn't even denied by the church. They call the source being plagiarized as "Q". And the plagiarism is okay because God inspired the writers of these gospels to plagiarize Q. Yes, we are to believe the Bible is the Word of God because God inspires plagiarism.
Most scholars, even those within the church, recognize that at least three of the gospels, if not all four, were not written by anyone by the name given to the gospel. No one knows how they got named. And the chance that any writer of the gospels was an actual eye witness of the events they describe is incredibly unlikely. And worse yet, the best source we have of any of them is a copy of a copy of a copy of a copy. We do however know that things were added over the centuries. For example, the story in John where people were about to stone the adulterer and Jesus told them he without sin cast the first stone does not exist in many of the earliest copies we have of John, but first appears many centuries later. The ending of the book of Mark, same issue. Not in the earliest copies, but appeared later. There are many other examples of such evidence. Why would God inspire people to write his word if he didn't do anything to keep people from altering it as time progressed? It was nearly three hundred years before any "official" decision was made on what writings are biblical and which ones aren't. Yes it's true that these letters were being read by early church fathers such as Polycarp, Irenaeus, et al... but so were many other letters that claimed different beliefs and doctrines of Christ.
What is unclear, but incredibly important, is what happened to early church in Jerusalem. Christians are expected to just assume the church today is what it became, but there is not only evidence that it died off in the mid 2nd century due to Rome sacking Jerusalem and expelling the Jews in 70 AD in response to the great Jewish revolt, and the 135 AD revolt that expelled the Jews from all Judea, there is evidence that their teaching and doctrines were vastly different than what Paul taught. But because the church as we know it today is a result of much post-135 AD solidification, what the early church in Jerusalem actually believed was very likely deemed a heresy due to lack of support from the gentile believers, which means any writings of theirs were very likely destroyed per Constantine's decree after the Council of Nicea decided the cannon, and the war against heresy commenced with backing of the world's largest empire behind it. It's only now thanks to modern archeologists that we are uncovering their writings that the war on heresy didn't get to. These writings show that the early church in Jerusalem was very Jewish. It was as Jewish as Jesus. It was as Jewish as the 12 apostles. It was as Jewish the 70 disciples. It was a Jewish church that was set on returning Israel back to it's roots. The teachings of Paul are very different than what this church believed and taught, and there is much evidence that Paul and this early church disagreed a lot. Paul's letters even reveal this disagreement, but if you assume Paul and the early church were one in the same, the context doesn't come through. If you read Galatians from the context that the "other Gospel" is the gospel being taught by the Jerusalem church, Paul's letter to the Galatians make a lot more sense.
What I've written here just scratches the surface of what I learned before finally letting go. It took me over two years to let go of my "Christian" belief. I love Jesus. I consider myself to be a disciple of him. But I have concluded that Paul's writings are absolutely not the Word of God. The Gospels themselves were very likely written after Paul's death, by gentiles who prefered Paul's non-Jewish doctrine to the Jerusalem Church's Jewish doctrine of Jesus. They very likely plagiarized from a writing from the Jerusalem church, adding their own spin to make it Pauline, and then the source was destroyed post Constantine. Most scholars agree 2 Peter is a forgery, and not written by Peter. Some even claim 1 Peter is a forgery too. The one book in the Bible that appears closest to what the Jerusalem Church believed is the book of James. But even with that book our best source is a copy of a copy of a copy of a copy. To think we can trust anything from that time to be authentic, let alone the unaltered inerrant word of god is insane.