My theory and faith is this:
God exists. God extends his consciousness into his physical creation and allows his consciousness to exist within sentient lifeforms. These sentient lifeforms are limited in their ability to grasp the whole of God (for that would be impossible). God cannot recreate himself in an absolute sense and mirror his infinte being.
Our personality is bound within the flesh and driven by God's spirit (consciousness).
When we die, we die in an absolute sense and the spirit of God returns. Our ownership ends at death.
God is more than capable of creating a detailed record of our person and allowing us to transcend death in any way he chooses. Either in a physical body again at an appointed time, or in spirit form.
Anything we imagine, God would be potentially capable of recreating.
At least, that's how I see it
Contemporary science ignores the metaphysical for the most part, because they cannot measure it by human means.