For the Bhagavad Gita: What does Krishna mean when he says, “Nothing of non-being comes to be / nor does being cease to exist; / the boundary between these two / is seen by men who see reality”?

What will be an ideal response?

This somewhat cryptic statement is an expression of the endless cycle of birth, death, and rebirth and the undying nature of the human soul. Although its interpretation is open, it might be a reference to the illusory nature of existence and the goal of uniting with Brahman.