The living entity is described in the Bhagavad-gītā, mamaivāṁśo jīva-bhūta jīva-loke sanātanaḥ (BG 15.7). Sanātana means eternal. God is eternal sanātana, we are eternal sanātana, and there is an eternal place also. This material world is not eternal. The characteristics of this material world is that it appears at a certain date, it continues to stay for a certain period, it develops, then it dwindles and then vanishes. Just like our body, your body, my body: It has got a date of appearance. It is growing, or changing from one shape to another. It will stay for some time. From this body, some by-products will come out, sons and daughters, and then it will become old, dwindling, diminishing, and then it will vanish. One day it will come—no more this body.
Similarly, this material world is also like that. It is a gigantic body only. Whole cosmic manifestation has a date of its creation. It is expanding and it is giving so many by-products. Then time will come which is called devastation—there will be no more rain, and everything will dry up. All living entities will die. Then there will be devastating rainfall. Everything will be absorbed in water and then vanish. We have got this information from Vedic literature. So this is not sanātana-dhāma. This is not eternal dhāma. This is temporary. In the Bhagavad-gītā it is said, bhūtvā bhūtvā pralīyate (BG 8.19). It comes into existence and it disappears; therefore it is not sanātana-dhāma.
But there is another dhāma, sanātana, eternal. That is also, there is information in the Bhagavad-gītā. Paras tasmāt tu bhāva anya 'vyaktya 'vyaktāt sanātanaḥ (BG 8.20). So there is sanātana-dhāma, the living entity is sanātana, and God is sanātana, Kṛṣṇa is sanātana. So these three sanātana . . . just like we have our dealings. In Bombay there are so many businessmen. The place is Bombay, and two parties, business parties, they are dealing. Similarly . . . but these are all temporary. Our staying in Bombay city is temporary. The dealing is temporary. But there is another place, which is called sanātana-dhāma. That place is eternal, and the parties, namely God and the living entities, both of them eternal; their dealing also eternal. That eternal dealing is called nitya-līlā, eternal pastimes.