Okay so I have lots of questions about Christianity, but let's start with one of the most basic.
What are you following exactly? Christianity has different doctrines depending on your denomination. They have something in common. One of those things is the Bible.
If you are reading in English, you are talking about the King James Version, based on the Textus Receptus. It is an old english version that contains disputed passages such as the "Comma Johanneum". It is disputed because it only started being found from the 5-7th centuries AD. Hardly clear that it is the original word of the gospel writers. Earlier manuscripts entirely omit it as if it wasn't there. This is so disputed, in fact, that most Bible editions after the 19th century do not even contain it!
Owing to the widespread use of the Textus Receptus (TR) as the principal source-language text for Bible editions, the comma is also contained in most translations published from 1522 until the latter part of the nineteenth century.
This may be an example of what is called "pious fraud".
Mark 7:18-20 also contains a parenthetical statement stating that Jesus declared all foods clean. Once again this seems to be a conveniently added statement which many Bibles do not include.
So when you say you trust "The Bible" what do you mean? The English King James Version? The New Revised Standard Edition? They differ in their content, sometimes in doctrinal passages.
Now let's go further back in history. How did our Bible come to be the way it is? Well first of all there are lots of editions even back then. The Latin Vulgate happened to be one of the most famous ones.
Even earlier, in the first centuries, there was quite a bit of dispute about what were the authentic gospels. Irenaeus brought such weighty arguments as:
Irenaeus declared that the four he espoused were the four "Pillars of the Church": "it is not possible that there can be either more or fewer than four" he stated, presenting as logic the analogy of the four corners of the earth and the four winds (3.11.
In 325 AD, Constantine (after conquering Rome) proclaimed Christianity the official religion, convened the Council of Nicaea and the official creed affirming the trinity was born, and the canon was established.
So how do you know that the contents of the Bible have anything to do with divine inspiration? It seems more like a lot of political infighting.
Going even further back. What are the gospels? Most historians will admit that they were *anonymous* documents. For example Matthew was an anonymous document, and was simply attributed to Matthew, and we don't even know if the original was written in Hebrew or Greek! Furthermore, the translations have caused a lot of people anxiety. For example:
"You have heard that it was said, 'Do not commit adultery.' But I tell you that anyone who looks at a woman lustfully has already committed adultery with her in his heart."
Here we have an anonymous document translated into Latin then into English and here is what we got. Many Christians are worried about getting attracted to girls!
In reality, let's use a little logic. It says adultery. Adultery can ONLY be with a woman who is married. How can two unmarried teenagers commit adultery? They can't.
Did you know that in both Hebrew and ancient Greek, the word for WOMAN and WIFE are exactly the same? "isha" = woman = wife. So the document probably should have been translated like this:
"You have heard that it was said, 'Do not commit adultery.' But I tell you that anyone who looks at a WIFE lustfully has already committed adultery with her in his heart."
Which is quite similar to the commandment "do not covet your neighbor's wife".
In short, we have:
1. probably forged additions
2. canonization as a result of political infighting and denouncing others as heretics
3. anonymous documents written 30 years after the events accepted as gospel
4. translations which have given rise to doctrines based on translation alone
when you say you "trust the Bible" what do you mean? Which Bible? Trusting it to be infallible does not make sense if there are different editions.