A day is 24 hours to God. He says a 1,000 years is LIKE a day to him because he has been here forever. It's just an example of his nature.
The world was created in 7 days. For example he made the grass BEFORE he made the sun and the moon. So if a day actually meant a 1,000 years the grass would have died from lack of sun. He explained things like that on purpose so we would know he literally meant 6 days.
Ghosts are demons. Spirits that are here with us now. Every person that was alive and died is gone. They don't come back. They were unique individuals.
DNA is so intrinsic and so comlex it screams designer/creator. The human eye could never have evolved in a quadrillion years. The eye is a mystery. It also screams creator/designer.