Vedas and Upanishads give clear-cut ideas of what God is supposed to in truth. From the ultimate standpoint, all these Gods, which people believe and worship have no value.
Religious Gods are based on blind faith or belief. Belief is not God. Religious God cannot be considered as the center because the Soul, the ‘Self’ is the center of all that exists. Without the Soul the world in which you exist ceases to exist, which means the religious God is dependent on the Soul for his existence. God in truth is only the Soul, which is present in the form of consciousness.
Rig Veda: ~ 'Prajnanam Brahma'- Consciousness is the ultimate reality or Brahman or God in truth.
Do not accept any other God other than the Soul. The Soul is God in truth, Nothing is real but the Soul, which present in the form of consciousness. Nothing Matters but realize God in truth. God in truth is everywhere and in everything. Let these words be inscribed in your subconscious.
God in truth is hidden by the illusory universe. God in truth alone is real and eternal and all else is an illusion.:
Brahman is merely a word to indicate the ultimate truth or God in truth. The ultimate truth itself is God in truth.
Yajurveda – chapter- 32:~ God is Supreme Spirit has no ‘Pratima’ (idol) or material shape. God cannot be seen directly by anyone. God pervades all beings and all directions.
Thus, Idolatry does not find any support from the Vedas.
Rig Veda: ~ The Atman is the cause; Atman is the support of all that exists in this universe. May ye never turn away from the Atman the innermost self. May ye never accept another God in place of the Atman nor worship other than the Atman?" (10:48, 5)
Even Brihadaranyaka Upanishad: ~ Brahman (God) is present in the form of the Athma, and it is indeed Athma itself.
Even Bhagavad Gita says: ~ Brahmano hi pratisthaham ~ Brahman (God) is considered the all-pervading consciousness, which is the basis of all the animate and inanimate entities and material. (14.27).
When Bhagavad Gita says, God is considered the all-pervading consciousness which is the basis of all the animate and inanimate entities and material then nothing has to be accepted as God other than consciousness.
Brihadaranyaka Upanishad:~ "He who worships the deities as entities entirely separate from him does not know the truth. For the Gods, he is like a pasu (beast)". (1. 4. 10)
No mantras help to get rid of ignorance. All the mantras and rituals are meant for the ignorant populace, which strongly believes, the world in which he exists as a reality. For one who wants to acquire Self-knowledge or Brahma Gnana or Atma Gnana, the mantas will not help to realize the truth, which is beyond the form, time, and space.
That is why Sage Sri, Sankara:~VC~.61. For one who has been bitten by the serpent of Ignorance, the only remedy is the knowledge of Brahman. Of what avail are the Vedas and (other) Scriptures, Mantras (sacred formulae), and medicines to such a one?
VC- v6~ Let erudite scholars quote all the scripture, let Gods be invoked through sacrifices, let elaborate rituals be performed, let personal Gods be propitiated---yet, without the realization of one‘s identity With the Self, there shall be no liberation for the individual, not even in the lifetimes of a hundred Brahmas put together.
The nature of God in truth can be indicated with words within the domain of the form, time, and space. God in truth cannot be explained because God is the formless, timeless, and spaceless existence.