“I am Brahman”

This Self, which is nearer to us than anything else, is indeed dearer than a son, dearer than wealth, dearer than all beside. Let a man worship the Self alone as dear, for if he worships the Self alone as dear, the object of his love will never perish.

This universe, before it was created, existed as Brahman. “I am Brahman”: thus did Brahman know himself. Knowing himself, he became the Self of all beings. Among the gods, he who awakened to the knowledge of the Self became Brahman; and the same was true among the seers. The seer Vamadeva, realising Brahman, knew that he himself was the Self of mankind as well as of the sun. Therefore, now also, whoever realises Brahman knows that he himself is the Self in all creatures. Even the gods cannot harm such a man, since he becomes their innermost Self.

Brihadaranyaka Upanishad.