The Evolution of GOD! A Mystery within Religion????

In ancient times, God is viewed as an abstract concept; I mean, they didn't necessesarily believed that God is a Person sitting on a huge chair-throne, surrounded by seraphim, cherubim, etc. Most people might envisioned that way (God as a person, sitting on a throne, eternally praised by his holy angles) because that is how most scriptures mentioned him. However, it is very metaphorical and symbolic.
Instead, God is percieved as metaphysical concept, that can't be questioned, reasoned, or negotiated by mere human intellectual.