Whatever takes form as the duality is false. Only the nondual consciousness endures. When you understand the truth, beyond the form, time and space, the duality will never be a reality again. For the consciousness is infinite, within and without, like a mirror, and the image in a mirror. The consciousness is everywhere, filling all things and flowing through the dualistic illusion forever.
The consciousness is like a lamp which lights up a theatre and reveals both a dancer and a stage.
The ignorance is the cause of experiencing the world as a reality. The world in which we exist is a dualistic illusion. The ‘self is hidden within the dualistic illusion and it is without the dualistic illusion.
The mystic must become a constant slave to some line of "thought" or rather imagination, and then he will really see visions confirming his imaginations.
The mystic who sees God in vision has seen Him during the waking state. The waking experience itself an illusion. Thus, whatever seen within the illusion is bound to be an illusion. Thus, it is necessary for the mystic to realize his existence is a reality within the illusion. Whatever belief of God one is familiar with through his inherited conditioning or samskara that he will see in his visions. When man is the false Self within the false experience, then whatever he believes is bound to be a falsehood.
God is the Soul the innermost Self. The Soul is present in the form of the consciousness. God is not within you, but you and your experience of the world are within the God. Self-realization is God realization because the Soul the innermost Self itself is God. When you and your experience of the world disappear, then God alone prevails as formless, timeless and spaceless existence.
No duality, no differentiation. Only Atman exists. Let us see in the words of Krishna:
Bhagvad Gita: 4: 22 :~ ".....who has gone beyond the conflicting dualities like good (happiness) and bad (sorrow)....."
Bhagavad Gita: 4: 42:~ ".....cut all such conflicting dualities (doubts) by the sword (weapon) of knowledge. ....."
Bhagavad Gita: 5: 18:~ “The learned men (who have come out of delusions (Māyā), got rid of Avidya) see no differentiation have equal vision for a revered Brahmin, a cow, an elephant, a dog and a cāndāla (outcaste, rogue, mleccha, demonic person etc)"
Bhagvad Gita: 5: 19:~ "Those who have achieved the true knowledge i.e. the 'Self-Knowledge' or the 'knowledge of Atman' and see no difference, are free from conflicting dualities have merged in Brahman"
Bhagvad Gita: 5: 20:~ "One who does not get excited out of happiness on getting good and does not get depressed on getting bad is situated in Brahman i.e. is merged in Brahman"
Bhagavad Gita: 6: 9:~ "The one who has equal vision for a Selfless do-gooder, a friend, a foe, an unbiased, a well-wisher, a depressed and jealous man, relatives, a righteous and a sinner is the best (as he sees no duality and differentiation but sees everything as Ātman)"
Bhagavad Gita: 6: 32:~ “.....as one seeks and treats oneself with equal vision, the same way one who has equal vision for good and evil, for everybody, is the best of all"
Bhagvad Gita: 6: 8 :~ "For whom soil, a pebble and gold are alike, he is merged in Brahman"
Bhagvad Gita Gita: 7: 27:~ ".....people are getting entangled in the primordial ignorance (Avidya) of the conflicting dualities like good and evil, happiness and sorrow caused due to attachments, desires and hatred....."
Bhagvad Gita: 6: 28:~ “.....who have cut-off conflicting dualities (like good and evil) is determinedly in my service. ...."
Bhagvad Gita: 7: 19:~ "Such a man who has attained true knowledge, the knowledge of Self, the knowledge of Atman, in the last birth in the series of many births worships Me as~ Atman alone exists~ everything is Atman, there exists nothing except Atman. Such a man is extremely rare"