The first speaker of the Bhagavad Gita is Lord Krishna. In the Gita, Lord Krishna delivers the spiritual teachings and guidance to Arjuna, the warrior prince, on the battlefield of Kurukshetra. The conversation occurs at a moment of crisis when Arjuna is confused and morally troubled about fighting in the impending war against his own relatives, teachers, and friends.
Lord Krishna imparts profound wisdom about life, duty (Dharma), selfless action (Karma Yoga), devotion (Bhakti Yoga), and the nature of the self (Atman), among other spiritual concepts. His teachings aim to resolve Arjuna’s doubts and help him understand his responsibilities as a warrior.
Thus, Lord Krishna is the one who speaks the Bhagavad Gita first, addressing Arjuna’s existential and moral dilemmas with divine guidance and profound philosophical teachings.