All mantras are based on non-Vedic Gods and such mantras based on non-Vedic Gods will not help to get rid of ignorance.+

All mantras are based on non-Vedic Gods. non-Vedic Gods are imaginary Gods based on the false self (ego) within the false experience(dualistic illusion). 

Realizing the real God is real worship. Whatever based on the false God yields no fruits. It is necessary to realize what God supposed to be in actuality. 

God is not physical. God is present in the form of the Spirit. The Spirit is the cause of the world and the Spirit itself is uncaused. 

From the standpoint of the Spirit, the form, time, space and name are merely an illusion. The spirit alone is real and all else is an illusion. In reality, the spirit (God) matter (the world in which we exist) are one. 

The Vedas confirms God is Atman (spirit), the Self.

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.

Brihadaranyaka Upanishad: ~ Brahman (God) is present in the form of the Athma, and it is indeed Athma itself.

People, who worship the belief of God, are hallucinating that they become one with such God.

Vedas itself says: May ye never accept another God in place of the Atman nor worship other than the Atman? Thus, to know the real God Self-realization is necessary. Self-realization is God-realization. Self-realization itself is real worship.

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 worshipper 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.

God is the Supreme Being the One eternal homogeneous essence, indivisible consciousness, and intelligence, which is beyond form, time, and space. Which the Sages describe in a variety of ways through diverse words.

Bhagavad Gita: ~ ‘All those whose intelligence has been stolen by material desires, they worship many God s. (7- Verse -20)

Only the path of wisdom leads the seeker of truth on his journey to the ultimate realization of the true nature of the Universal Essence, which is the Soul. The Soul is present in the form of consciousness.

Bhagavad Gita: 7: 19:~ "Such a man who has attained true knowledge, the knowledge of Self, the knowledge of Atman, worships ‘Self’ as~ Atman (God) alone exists~ everything is Atman, there exists nothing except Atman. Such a man is extremely rare."

Bhagavad Gita: ~ 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.

Lord Krishna Says Ch ~V: ~ “Those who know the Self in truth.". The last two words (tattvataha) are usually ignored by pundits, but they make all the difference between the ordinary concept of God and the truth about God. 

The dualistic worship of "God” is only for the ignorant populace. The God in truth is only Atman, the innermost Self. In reality, there is no duality, no differentiation. Only Atman exists.

Brihadaranyaka Upanishad IV-13:~ ‘As a mass of salt has neither inside nor outside, but is entirely a mass of taste, thus indeed, has that Self neither inside nor outside but is altogether a mass of Knowledge. Just as a lump of salt has inside as well as outside one and the same saltish taste, not any other taste, so also that Brahman (consciousness) has inside as well as outside one and the same intelligence. Inside and outside are mental creations only. When the mind melts in silence, ideas of inside and outside vanish. The sages’ cognizes one illimitable, homogeneous mass of consciousness only.

Causality taught in the Upanishads is only to enable us to understand the supreme truth of no-origination. The world is not different from the consciousness and the consciousness is not different from the Soul, the Self, and the Soul is not different from the ultimate truth or Brahman. That the consciousness appears as the diverse world is only an illusion. If it really became diverse than the immortal would become mortal.

The dualists who seek to prove the origination of the unborn, by that very enterprise try to make the immortal, mortal. Ultimate nature can never change - the immortal can never become mortal and vice versa.

Sage Goudapada quotes from the Upanishads: ~ "There's no plurality here"; "The Soul through its powers appears to be many"; "those who are attached to the creation or production or origination go to utter darkness"; "the unborn is never reborn, for what can produce it?” 

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. 

Brihad Upanishad: ~ “If you think there is another entity, whether man or God there is no truth." 

When Upanishad itself declares: ~ Sarvam khalvidam brahma ~ All this (universe) is verily Brahman. By following back all of the relative appearances in the world, we eventually return to that from which it is all manifest – the nondual reality (Chandogya Upanishad). 

All the mantras and rituals based on the religious Gods 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 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 

Sage Sankara goes on to say: ~ 'A sickness is not cured by saying the word “medicine.” You must take the medicine. Liberation does not come by merely saying the word “Brahman.” Brahman must be experienced. Until you allow this apparent universe to dissolve from your consciousness until you have realized Brahman, how can you find liberation just by saying the word Brahman? The result is merely noise.

Until a man has destroyed his enemies and taken possession of the splendor and wealth of the kingdom, he cannot become a king by simply saying “I am a king.” 

A buried treasure is not uncovered by merely uttering the words: “Come forth.” You must follow the right directions, dig, remove the stones and earth from above it, and then make it, your own. In the same way, the pure truth of the Atman, which is buried under Maya and the effects of Maya, can be reached by meditation, contemplation, and other spiritual disciplines but never by perverted arguments.

Sage Sankara: ~"That which permeates all, which nothing transcends and which, like the universal space around us, fills everything completely from within and without, that Supreme non-dual Brahman  (God)."

Thus, truth realization is Self-realization. Self-realization is God-realization.  God-realization itself is real worship. :~Santthosh Kumaar