The consciousness to which the body mind appears is that limited, does that grow old? Does that grow through ups and downs? Unhappiness and frustration? No. Not as a matter of stipulation, not as a rhetoric, but I come to see that it is so. That is Brahman. And if you realize that this very Atman, the Self as Brahman, is, he says, Amrita Abhavanti,. You become immortal, become immortal figuratively only. The next two verses are teachings of meditation, yogic meditation, in order to attain this realization.