The Unity of Existence in Holy Quran Verses and Narrations

The unity of existence means the circulation of the absolute existence of God in every bit of the universe. That is, the essence of existence is one, the example of which is God Almighty, and the universe is the manifestation of God. That is, the universe is a shadow of the Divine Essence. Therefore, the author with the question that the main subject of theoretical mysticism, i.e., the unity of existence in Holy Qur'an and in the words of its commentators has been raised? Follows up the issue by collecting information in a library and in a descriptive – analytical manner and by examining a number of verses of Holy Quran and the words of Innocent Imams, assuming that the issue of unity exists in many verses of Holy Quran and also the divine saints are seen in many cases of speeches, seeking to prove that the most important subject of theoretical mysticism, namely the unity  of existence, is found in many Verses of Holy Qur'an and numerous words of the Great people and intellectuals.