No. You are leaving out that there are many reasons to accept the Bible as reliable. The first point in this is to recognize that the Old Testament in Jesus time can be relied on to be the same as what we have today.
I can explain the whole way of salvation strictly from Old Testament verses.
This is something that needs to be given attention to, because this was not made up by one person, or many people, but orchestrated by God in a way that humans could have never come up with.
Can you think of another book that compares to the Bible in it's spread across time and authors and yet has a unifying and uncontradictory message?