The thought is, I’ve been here before. It’s like you are living in a memory. To say I dreamed it, says nothing about how the future entered your mind.
For this to be valid, one must accept the truth of déjà vu: that our prior memory of a present event is just that.
No one has access to the future. The future does not exist right now.
If the human mind was isolated to spacetime, with no connection to other realities outside of spacetime, there is no reason to believe an imagined déjà vu event would happen.
If there is another realm, outside spacetime, where the mind lives, could we have access to things that haven’t yet happened?
If God exists, he is timeless, and has existence outside of spacetime. So his omniscience would include knowledge of the future.
For déjà vu to be possible, the mind must either have direct access to the future or access to something that has access to the future.
Do we have direct access to the future? No. So we have access to a being, who has access to the future. Either way,
Truth exists outside of spacetime.
Why, because there are any infinite number of variables that go into making the déjà vu event happen. Think of the butterfly effect. If any part of the event was different, it wouldn’t seem like a memory. So the only way that this could be true is if there is a reality outside of spacetime. And a being with access to it.
To exist outside of spacetime with access to truth that is in it, the being must be omniscient. God is omniscient.
But also, this is not just access to the truth. This is access to my truth. So that this being has access to my mind. Therefore, this being is personal.
From déjà vu, I think we can reasonably conclude that a personal God exists outside of spacetime who is omniscient and personal.