The Christian faith and specifically the resurrection of Jesus is more of an oral transmission than a written transmission. To say there is a Bible that doesn't mention the resurrection, even if true won't in anyway invalidate the oral transmission of the belief which goes all the way back to when the faith started in the first century. Something as big as resurrection doesn't depend on a written book or a piece of paper to successfuly make it to the next generation(s). I think you're reducing Christianity and specially the resurrection to basically a fable in a book that was found by people who took it serious rather than something that actually happened at one point of history and people took it serious because it actually happened and that's why they transferred it to their children as facts rather than a story they read somewhere. The latter has explanatory power in terms of what's been happening in history. The former doesn't and is more like an outlandish conspiracy theory that makes no sense of the written history.