With God all things are possible.
So several key figures we thought dead could be risen. That’s certainly within God’s power because everything is.
But even that kind of proof would be disbelieved by some/many.
Could be a clone.
Could be cgi.
Could be advanced tech we know nothing about.
I’d be thrilled to hear JA testify.
I’m not sure how I’d feel if SR suddenly appeared. I’d be skeptical.
Same if any of the previously deceased Kennedy family members suddenly turned up.