The Gita celebrates our highest truth, the atma . Atma means self. But atma also means God. Atma is our god-self, our true self. And since God is always one, atma is the one true self of everyone and everything.
Illusion makes it appear as the many.
Our destiny is to dispel the clouds of illusion so that our truth is revealed and the atma is realized. That is selfknowledge. When self-knowledge comes, the illusion of separate beings and separate objects goes, and is replaced by unity consciousness. Self-knowledge is the only knowledge that has truly eternal and lasting value, for it enables us to transcend all limitations of time and space, and be immersed in the bliss of the atma . In every major age, God comes as avatar and teaches the Gita to initiate us into self-knowledge and dispel the veils which hide our divine nature.