Sri Isopanisad - narration
Sri Isopanisad states that everything belongs to the Lord. Everything exists on the energy of the Supreme Lord. This is also confirmed in Bhagavad-gita. Because everything is produced of His energy and exists on His energy, the energy is not different from Him--but still the Lord declares, I am not there.
The essential Vedic teachings on the universal nature of personality are summarized in Sri Isopanisad, the foremost of the 108 Upanisads.
The Isha Upanishad is significant for its description of the nature of the "Supreme Being", exhibiting monism or a form of monotheism, referred to as Isha "Lord". It describes this being as "unembodied, omniscient, beyond reproach, without veins, pure and uncontaminated" (verse 8), one who "moves and does not move', who is 'far away, but very near as well'" and who "although fixed in His abode is swifter than the mind" (verses 4 & 5).