And here is where I say again that because one’s definition of a miracle varies and is entirely subjective, one person’s “divine intervention non-miracle” is another person’s miracle.
Regardless, blind people seeing again, paralyzed walking again, or even the dead coming back to life are all easily explained by science. Head injuries, illnesses, even some neurological challenges result in blindness that, when they resolve, resolve the blindness. Same with paralysis, some of which can be self-correcting after an associated injury or illness has been healed. Even correction of malnutrition or inadequate water can help alleviate symptoms. Coming back seemingly from the dead happens even now… A coma, a vegetative state, even cardiac but not brain death has led to people being declared dead only for them to “come back to life” at a funeral, a mortician, etc. It’s not impossible to think that in a culture where the nuances of brain vs cardiac death, comas, and vegetative states would assume somebody dead when they weren’t. A lack of scientific understanding, medical knowledge, added to the statistical improbability of such occurring made it appear like a miracle when it happened, but that doesn’t erase that those all have scientific solutions to them.
The fact that the occurrences exist and they occurred despite their rarity and statistical improbability is what the miracle is, not the act itself.