The universe will not disappear. but the unreal nature of the universe is exposed just like a dream becomes unreal when waking takes place. +

Sage Sankara has declared the universe is an illusion. It means the universe in which you are born, live, and die is merely an illusion.

Sage Sankara has declared the universe is an illusion. It means the form, time, and space, which is present only when the universe is present is merely an illusion.

Sage Sankara has declared the universe is an illusion. It means the world that appears as waking or a dream disappears as deep sleep is merely an illusion.

Sage Sankara declares Atman is Brahman and Brahman alone is real. It means the Soul, which is present in the form of consciousness is the ultimate truth. The ultimate truth is Brahman. Brahman is God in truth.

Thus, the Soul, which is present in the form of the consciousness (Spirit) is God in truth.

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 is 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.

Remember: ~ 

The universe will not disappear. but the unreal nature of the universe is exposed just like a dream becomes unreal when waking takes place. 

A Gnani observes the consciousness hidden by the universe as it is without form, time, and space. To a Gnani the universe is illusory, because, his views and judgment of the worldview are based on the Soul, the Self. 

Upanishad: ~They alone in this world are endowed with the highest wisdom who are firm in their conviction of the sameness and birthlessness of Atman. The ordinary man does not understand their way. (Chapter IV — Alatasanti Prakarana 95-P-188 in Upanishads by Nikilanada) 

A perfect understanding of ‘what is what’ through deeper thinking and reasoning helps to acquire Self-knowledge or Brahma Gnana or Atma Gnana.  :~ Santthosh Kumaar