The waves of the ocean are no different from the ocean.Similarly the inner soul.
Just as a person casts off worn-out garments and puts on others that are new, even so does the embodied soul cast off worn-out bodies and take on others that are new.
Weapons do not cleave this self, fire does not burn him; waters do not make him wet; nor does the wind make him dry.
He is uncleavable, He cannot be burnt. He can be neither wetted nor dried. He is eternal, all-pervading, unchanging and immovable. He is the same forever.
He is said to be unmanifest, unthinkable and unchanging. Therefore, knowing him as such, thou shouldst not grieve.