You are right that not all of it is to be taken literally. Obviously when Jesus claims to be a door he is talking figuratively.
Nevertheless, just because an event described is miraculous that does not mean that it is silly. You are making a grave error to think that since something has not been witnessed recently that it never happened.
After all, our science has a law that says that matter can never be created nor destroyed. Yet at the same time the Big Bang is an example of a widely believed scientific theory about the whole universe being created from nothing. In fact, many physicists believe that matter is being created from nothing constantly. If the God of the universe can create the entire universe from nothing then certainly that same God could control the details of that creation. And an example of one miraculous event opens the door to the possibility of all miraculous events. And if that matter is coming from nothing then we can say that it is not coming from the natural world; we would have to conclude that it is coming from beyond the natural world -the supernatural world. That does not mean that we know anything about the supernatural, except that matter comes from it, nor does it confirm what the bible says about the supernatural. All it does is demonstrate that there is something other than just the natural.
So just what scientific information would one use to determine that some people never lived to be 900 years old? Considering that the average life expectancy used to be about 40 years old and that now we have a realistic expectation of living to be 120 or more if we live right who is to say that it will not grow to be 140 or 160? In fact, actual scientists are proposing that people may live to be several hundred years old. In a world with far less polutants, a different atmosphere, a more wholesome diet, and a better gene pool, it starts to seem quite reasonable that some people could have lived to be 900. Add to that the divine intervention of God to maintain a persons healthy body and one needs to demonstrate that God does not exist before one can say that some people never lived to be 900. And guess what? No one has demonstrated that God does not exist.
Not that I have proven He does. I make my statement as a matter of faith. It is plausible and not inconsistent with science. If it were I doubt the founders of science - almost all religious men - would have created it.
