GREETINGS

Dear Swamiji. I am very impressed with the explanations that Krishna gives Arjuna on almost every topic that a man goes through in his lifetime. Like the idea of the soul being indestructive and the changing of clothes metaphor. But where is the proof for all of this. On one hand, I admit that its the most rational or reasonable explanation one could come up with but where is the proof for all of this. Even if this is written /said by some of the smartest minds of those times(Krishna). But there are chapters where Science predominates in Gita, like the brain development of a child that begins in the womb, but I think when it comes to more spiritual things, are we supposed to believe what Krishna says because he has substantiated the other parts with credible evidence. Please clarify this for me.