Here are some candidate definitions of God.
God is the God of Abraham and the God of the bible. In my opinion, this isn't totally bad and is the one I try to work from.
God is a personal "supernatural" creator of the universe who exists "outside time" and "outside the universe".
God is the first cause. The problem with this is, another
Here are some candidate definitions of "supernatural":
Supernatural means, outside the laws of nature.
- problem how do we know what the laws of nature are and what supernatural effects are
Candidate definitions of "non-material"
-- Not composed of particles (matter) or light energy
- problem what if a new entity is discovered