A list of definitions of God are listed in here;
Early on, theists started with simple definition of God, e.g. god is in the trees, seas, etc., the bearded man in the sky, see below;
Then as human evolves more intelligently, [a]theist began to question the reality of God against every definition that theists can come up with until they are pushed into the corner and no further thus ending up with the ontological God.
Theists will argue among themselves with their own definitions of God, but the most intelligent theists will end up with the ultimate definition of God, i.e. the ontological God.
By the principles of the Normal Distribution one can expect of a small percentile of all theists would have very high intelligence [not necessary wisdom].
The more sophisticated and intelligent theists were those like St. Anselm, Descartes, Leibniz and others who came up with the idea of the ontological God, example.
- St. Anselm;
"being than which no greater can be conceived".
He suggested that the concept of God is that of a supremely perfect being, holding all perfections. He seems to have assumed that existence is a predicate of a perfection.
In order to stop the infinite regression inevitable in a 'one-up' impulse, theists will end up with the ontological God.
The ultimate definition of God, is that of the ontological God.