To All: As hinted in MMY's Apaurousia, Agni represents the Self from which the five elements of life (fire, earth, air, ether, and water) have sprouted. Agni traditionally is recognized as the fire god. But from a symbolic point of view, Agni can represent pure consciousness, the fire that burns within all living beings.
Therefore, the realization of the self means mastery of the mechanics in the universe. As the Rig Veda sings, the Ved cannot do anything for anyone if a person is not aware of It. JR