Vedic God is Advaita.+

The religion of the Veda knows no idols. It means the Vedic God is a formless, timeless, and spaceless existence. That means Vedic God is Advaita.

Max Müller says ~  "The religion of the Veda knows no idols; the worship of idols in India is a secondary formation, a degradation of the more primitive worship of ideal Gods."

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.

In Vedas, God has been described as: ~

Rig-Veda 1-164-46 and Y.V 32-1 clearly mention that God is “One”.

Rig Veda declares God is ‘ONE’ and God is Atman, then why believe and worship in place of real God.

Rig Veda 1/164/46: ~ “They call him Indra, Mitra, Varuna, Agni, or the heavenly sunbird Garutmat. The seers call in many ways that which is One; they speak of Agni, Yama, Matarishvan.

Rig Veda 8/58/2:~ Only One is the Fire, enkindled in numerous ways; only One is the Sun, pervading this whole universe; only One is the Dawn, illuminating all things. In very truth, the One has become the whole world.

The Vedas confirm God is Atman (Spirit), the Self. 

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)

How can you worship God? That implies two ~ the worshiper and the worshiped, whereas God is nondual. One can worship his idea of God only or realize his unity with it when he can’t worship it as apart.

When Upanishads and Vedas declare that, “God is in the form of the Athma, and God is indeed Athma itself” then why accept another God in place of the Atman nor worship other than the Atman.

Sage Sankara’s Supreme Brahman (God) is impersonal, Nirguna (without Gunas or attributes), Nirakara (formless), Nirvisesha (without special characteristics), immutable, eternal, and Akarta (non-agent). It is above all needs and desires. It is always the Witnessing Subject. It can never become an object as it is beyond the reach of the senses. Brahman is non-dual, one without a second.

Belief in multiple Gods, The worship of idols and the worship of images that are not God, The worship of sacred images, ancestor worship, pilgrimage, priestcraft, the belief in avatars or incarnations of God, the hereditary caste system on the grounds that all these lacks Vedic sanction.

Religious people indulge in non-Vedic beliefs such as idolatry, ancestor worship, pilgrimages, priestcraft, offerings made in temples, the caste system, untouchability, and child marriages. All these lack Vedic sanctions, therefore, Hinduism is not Ancient Vedic religion or Santana Dharma.

Realizing the universe is created out of single stuff and that single stuff is the Soul which is present in the form of consciousness leads to non-dualistic or Advaitic Self-awareness. Self-awareness is freedom or Moksha. Moksha is unity in diversity in the midst of duality.

It is very difficult to talk to people about the ultimate truth or Brahman because everyone thinks he knows the ultimate truth or Brahman. This I know business is dangerous. And whatever his reached conclusion is second-hand stuff. Therefore, accepting accumulated knowledge without verification will lead the seekers to hallucinated realization based on the ego. One may have some flashes of truth when someone tries to indicate it through fewer words. But it takes nearer to truth, not realization

It indicates clearly all the Gods with form and attributes are mere imagination based on the false self.

Remember:~

Yajurveda says:~ 

Translation 1

They enter darkness, those who worship natural things (for example air, water, sun, moon, animals, fire, stone, etc).

They sink deeper into darkness those who worship sambhuti. (Sambhuti means created things, for example, table, chair, idol, etc.) (Yajurveda 40:9)

Translation 2

"Deep into the shade of blinding gloom fall asambhuti's worshippers. They sink to darkness deeper yet who on sambhuti are intent." (Yajurveda Samhita by Ralph T. H. Griffith pg. 538)

Translation 3

"They are enveloped in darkness, in other words, are steeped in ignorance and sunk in the greatest depths of misery who worship the uncreated, eternal prakrti -- the material cause of the world -- in place of the All-pervading God, But those who worship visible things born of the prakrti, such as the earth, trees, bodies (human and the like) in place of God are enveloped in still greater darkness, in other words, they are extremely foolish, fall into an awful hell of pain and sorrow, and suffer terribly for a long time." (Yajur Veda 40:9.)

So, Yajur Veda indicates that:~

They sink deeper into darkness those who worship sambhuti. (Sambhuti means created things, for example, table, chair, idol, etc. (Yajurveda 40:9)

Those who worship visible things born of the prakrti, such as the earth, trees, bodies (human and the like) in place of God are enveloped in still greater darkness, in other words, they are extremely foolish, fall into an awful hell of pain and sorrow, and suffer terribly for a long time." (Yajur Veda 40:9.)

When the religion of the Veda knows no idols then why so many Gods and Goddesses with different forms and names are being propagated as Vedic Gods. Why these conceptual Gods are introduced when the Vedic concept of God is free from form and attributes.

In India, the founders of different caste, sects, cults in the past introduced the concept of God with attributes and attributeless Gods with diverse rituals to the deities.

 Brihadaranyaka Upanishad declares: "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)

Yajur Veda says ~ “Those who worship visible things, born of the prakrti, such as the earth, trees, bodies (human and the like), in place of God are enveloped in still greater darkness. Therefore, all these add-ons prove that the form and attribute-based concepts are introduced by some sages of the past with a new belief system and code of conduct in the name of Vedas. Thus, devotion to such conceptual Gods and Goddesses are non-Vedic. by indulging in non-Vedic practices, one will remain ignorant. The main aim of Vedas is to acquire self-knowledge.

Therefore, all the add-ons and attribute-based knowledge, which are inferior, have to be bifurcated and excluded to know the ultimate truth.

Sage Goudpada says ~ “The merciful Veda teaches karma and Upasana to people of lower and middling intellect while Jnana is taught to those of higher intellect.

This clearly indicates that religion, which is based on individual conduct, prescribes karma and Upasana to people of lower and middling intellect, therefore religion is for the lower intellect. And wisdom is for those who are capable of inquiring into their own existence to know and realize the ultimate truth, which is Brahman.

Bhagavad Gita: ~ “Brahmano hi pratisthaham ~ Brahman is considered the all-pervading consciousness, which is the basis of all the animate and inanimate entities and material”. (14.27)

If Brahman is considered the all-pervading consciousness then, it is necessary to realize, the consciousness as self, which pervades all the three states, to realize the fact that there is no second thing that exists other the consciousness. Thus, consciousness (Atman) is the ultimate truth (Brahman).

Sage Sankara’s notion of Maya, the cosmic illusion, which must be transcended in order to realize the truth of Brahman, which means the ultimate truth or God.:~Santthosh Kumaar