In plain words
The indweller in the body has neither death nor birth! That very indweller is the Ātma. The Ātma cannot have any changes or alterations at all. To think that the Ātma, the ground of the body, has the qualities of the body is merely Ajñāna, nothing else.
What is seen is one thing, the seer is another, and the objects that appear are another. Even the eye sees only through the light of the Ātma. The senses are like mirrors. Only when the light of the Ātma falls on the mirror do objects become visible in them. The body, the mind, the citta, the Buddhi and the senses: all these have been given to human beings for holy karma. You must use them for good karma. Not for the result that comes from that karma; of the karma alone are you the doer! The Giver of the fruit is another. You can take a knife in your hand and cut vegetables. The knife does not eat those vegetables. It does not partake of the fruits. Like that knife, you must be merely the instrument.
Another small example. We have poured fruit juice into a cup. The cup does not know its taste in the least. Even when it reaches the tongue, the tongue knows only this much, whether it is sour or sweet; but the tongue is unable to enjoy that fruit juice fully! So it sends it, that juice, down into the belly; the stomach too does not enjoy it itself, but digests it well and supplies that energy to every limb; the small nerves and the large nerves spread that energy everywhere, throughout the body.
You must fit this example to yourselves, each in keeping with your own experience. That very cup is the body. In it is the sweet juice of the Ātma, which is divinity. When you draw it up through the straw that is the senses, the tongue called Buddhi examines what is eternal and what is not. Then it offers every experience to the Ātma. The jīva-principle that is the belly passes its essence on to every limb and turns the inert into Cit. This is the very way and the rule of the spiritual life.