Krrishna's divine incarnation is a motif through this book. According to Hindu tradition, Krishna is the 9th avatar, or incarnation of Vishnu on the Earth. Vishnu is called by many the god of "peace and order" and "the preserver."
Krishna is presented as both divine and human. Arjuna realizes that he must be divine due to the power of and the spiritual quality of what he shares with Arjuna. A definitive judgment is being made regarding this entity. He is a human being, a friend of Arjuna's. In fact, he is simply the charioteer. Obviously, this ensures that Arjuna is not alone in this circumstance.