Because everything else in the Bible I find to be true. So why would everything else in the Bible be true but these be a lie?
Because it's been constructed to appear that way, plus, you always give the Bible the benefit of the doubt, when it could be wrong. The creation story is a good example of the way you choose to bend over backwards to accommodate error.
The best way of constructing lies, is to blend in a healthy dose of truth, so that people who think like you (most people) will be fooled. The best lies resemble truth. The most devious liars always use as much truth as possible. I have a neighbour who lies continuously
(every sentence), but because nearly everyone knows that he lies continuously, he can't do as much damage as someone who is taken seriously.
Regarding the construction of the Bible: it uses as much truth as it possibly can. Why wouldn't it? However, when it is not possible, it has to lie
. For example, it was not possible for the writer to know how the universe was created, so he got caught out by modern science. It's not possible for a person to resurrect, so it has to lie, there.
There is a certain regularity to how you have fooled yourself. You have seen that the Bible is correct in the things it doesn't have to lie about, but have concluded that, therefore, it must also be truthful about the things it had to
The most critical part of the Jesus story is the resurrection. No matter what logic you use to pretend that the stories about Jesus are mostly true, there is no way you can possibly verify whether the most critical part of it has been invented. I hear that Elvis is still alive.