I don't think you're making a lot of sense right now. never existed is not the same as doesn't exist. We don't have video of dinosaurs. But, if a T-rex was roaming around the south of France today, you can damn sure bet there'd be video of it now. And that's even if it's a very shy T-rex.
Someone walks on water today, and I guarantee you that within hours, you'd have dozens, if not hundreds of people ALSO walking on water, including tutorials on how the stunt was done. And today, I think it's pretty reasonable to say that, absent video, if someone is claiming to be able to walk on water, you should be VERY skeptical.