God "is one and the same" (but always expanding/evolving), but BELIEFS about God are more or less limited to the the finite human intellect.

God didn't write the Bible. It is just one of many attempts to record both cultural mythology (including Origin Myths), and experiences of people having various spiritual experiences, including Near Death Experiences, Shared Death Experiences, spontaneous visions and dreams or visions brought about through the use of psychedelics ("accuracy" being highly questionable), out-of-body experiences (questionable if they occurred as elements of dreams or in a near-asleep state such as those of Robert Monroe's), through hypnosis in our present era (the accuracy of which is also questionable depending on the skills of the hypnotist or hypnotherapist), or through meditation.

The Bible has been both highly edited to magnify the teachings (and manipulations of) of the Catholic Church, and wronly interpreted because those without direct spiritual connection do not understand the parts of the Bible that try to describe it. For instance, the "Name of God" or "Word of God" is the vibrational frequency of God itself. But Christians who don't understand that believe that the BOOK is the "Word". Which proves that they don't understand their own Bible, because it does NOT say "In the beginning was the Bible, and the Bible was with God, and the Bible was God". (from John 1:1) Thats is pure nonsense! But that is the logical result of calling the physical book the "Word"! But since they have no idea what the Word is, that's the best they can come up with.