Fire is conductive to heaven as per quotes of ancient culture of spirituality, indeed fire may be a mean to attainment of heaven, the prime source of fire is sun, and it is bound to establish in intellect to help spirit to ascend in regions within self to make unto truth of celestial sphere, indeed fire indicate hunger and thirst and formulate the passion for objects of Maya but the same fire within self makes it feasible for self to burn the knots of Maya to liberate self, Agni is a Tatva which may relates the self to the pristine cause, austerity and penance are conductive to that controlled fire to fly in regions within self for a bird eye view unto self and the reality,
May Lord Bless all,
Thanks please