Can you prove that one lives and still has experiences after their body dies?
Hearsay or religious stories are not proofs.
Saying the bible is proof is like saying comic books prove Superman,Spiderman and Batman are real beings that are alive.
“You cannot realize ANYTHING once you die.”
There is only one way you can prove this is proof.
That's why spiritual experience is so powerful. It's why trillions of people over time have pursued a spiritual path. There's something there. To one who has experienced the soul or divinity, it's as obvious as the sun. To one who has not, it's incomprehensible.
We're dealing with infinite Reality here. Your pronouncements on what does or does not exist, based on the tiny slice of Reality you currently perceive, are laughable. The parable of the blind men and the elephant comes to mind.