Self-Knowledge or Brahma Gnana or Atma Gnana should be explained again and again until it is firmly rooted in the subconscious.+

Sage Sankara said:~ Neither by the practice of yoga nor philosophy, nor by good works nor by learning, does liberation come, but only through the realization that Atman and Brahman are one in no other way. (1) Vivekachoodamani v 56, pg. 25

Lord Krishna confesses that the oldest wisdom of India (our true Advaitic wisdom) has been lost: people misinterpret and falsify it today as they did then. It is not yoga but the philosophic truth. But nobody knows it. The teachers of philosophy and leaders of mysticism or religion do not want to inquire into truth and have no time for it. (Gita –Chap- IV-v.2)

In Gita Chap.IV where Lord Krishna says: ~ "This yoga has been lost for ages" The word yoga refers to Gnana yoga, not other yogas: the force of the word this is to point this out.

Lord Krishna describes some of the other yogas but devotes this chapter separately to Gnana yoga. So one sees even in those ancient days people did not care for Advaita; they wanted religion; hence, Gnana got lost. That is why Krishna calls it "the supreme secret." Krishna points out that the yoga must see "Brahman in action."

Gita Chap.IV: "He who achieves perfection in Yoga finds the Self in time." This means that after his yoga is finished, he begins the inquiry into ultimate truth, and in due course, this inquiry produces the realization of the universal Spirit as the result.

When a yogi finds that yoga is inadequate and useless to realize the 'Self' he must drop yoga and take up the path of Gnana.

Swami Vivekananda: ~ ‘Jñāna Yoga is divided into three parts. First: hearing the truth--that the Atman is the only reality and that everything else is Maya. Second: reasoning upon this philosophy from all points of view. Third: giving up all further argumentation and realizing the truth. This realization comes from being certain that Brahman is real and everything else is unreal.

Sage Sankara says: - Yoga is not the means of liberation (page 132-133 - Commentary on Brhadaranyakopanishad.

In Sutra Bashya and Manduka Upanishad: - The Samadhi and sleep are identical. 

Remember:~ 

Self-Knowledge or Brahma Gnana or Atma Gnana should be explained again and again until it is firmly rooted in the subconscious.

The one who has adopted the life of a wandering monk will never be able to realize the truth that is hidden in the form, time, and space. He keeps wandering from one place to the next, meeting different gurus, and worshipping different Gods. He is caught up in the prison of the dualistic illusion.

People who think Self-knowledge or Brahma Gnana or Atma Gnana can be achieved by means of their karma (actions) are in a hallucination.

People who are worshipping religious Gods are hallucinating about their Gods of belief as truth. 

People must know what God is supposed to be in truth according to their own scriptures. First, they must know what is God in actuality.  Without knowing the truth of God worshipping false God leads to hallucination.

The existence of God or no God is only a belief. Belief is not the truth. Religion forces people to blindly follow their inherited belief verification. 

The religion is based on blind belief. Every religion has its own beliefs and dogmas. Religion discourages people from verifying whether it is based on truth or not.

That is why 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.

Lord  Krishna himself says that he can do nothing to make a man intelligent straight away. The adepts give Prasad, blessings, initiations, mantrams, etc. only to confer temporary peace of mind, to help one to get rid of worries, but not to confer Gnana. The capacity to receive it must first be inborn in man by evolutionary degree.

All sect-based beliefs are dualistic and unphilosophical nothing to do with the ultimate truth or Brahman or God. In spirituality the ultimate truth is God. The God of Vedas has nothing to do with the religious Gods.

Realize that God is the Soul, the innermost Self. Nothing is real but the Soul which is the ultimate truth or Brahman or God in truth. 

Nothing matters but love for the Soul, which is the real God. The Soul, the real God is everywhere and does everything. 

The Soul, the real God is beyond form, time, and space. The Soul the real God is everything. The Soul the real God alone is real and all else is an illusion.

Vedas and Upanishads confirm the Soul is God.

Rig Veda: ~ The Atman (Soul or Spirit) 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)

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 any other God in place of the real God.

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 the form of the Athma, and it is indeed Athma itself.

The 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)

People who are stuck with the religious idea of the Gods will never be able to cross the threshold of the dualistic illusion. : ~ Santthosh Kumaar