In the Prasna Upanishad there is a discussion between Prana (life force) personified and the five senses. I have taken this to represent a conversation between God and man just as the Bhagavad-Gita is. I take this Upanishad to mean that we as humans are but the sense organs of God.
The ear has no choice but to hear sound, and the eye has no choice but to see. That is unless we plug our ears or close our eyes to the truth of our surroundings. Similarly, we as the sense organs of God have no choice but to see Truth of the Divine and make our way back to our rightful place. The only thing that can stop us is if we make that conscious decision to close ourselves off to it, make ourselves blind and deaf to it.