"Sure we're told these things happen because 'that's just how their cells are' and 'that's just what they do'." You are misunderstanding something. We do not listen just because they say so. We listen because we trust the facts that are presented. So, there is sufficient evidence that backs up the reason to believe why cells behave the way they do. However, we do not have a good enough reason to suggest that God's brain created humans, disasters and raises the dead. That is just assumptions and guessing. That doesn't mean the possibility is ruled out. It just means we cannot measure that idea in any way; therefore we restrain from that field, scientifically-speaking.

when Jesus walked on water it was not just 'magically done' rather the particles of the water were adjusted so they were much more dense and able to be walked on, intentionally of course.
That is a possibility. But that still implies 'magic' or some sort because how did they change the particles? With their mind? If so, that is a poor attempt at justifying the incident. It is possible for us to change the particles of water but that requires a highly-advanced knowledge in biology or some sort. I am too illiterate in the fields of biology to explain it precisely but I do know that is a possibility that can happen. The only thing that differentiates every living being and every living thing are the combinations of DNA. If we happen to change those combinations we can probably yield some amazing results.