Prabhupada's lecture - Śrīmad-Bhāgavatam 1.8.28 - Los Angeles, April 20, 1973
And He's the eternal time. Everything is going on within the time. The time... Our time calculation is past present, and future. This is relative. The other day we were discussing. This past, present, future is relative term. The, for a small insect, the past, present and future is different from my past, present and future. Relative term. Similarly Brahmā's past, present and future is different from my past, present and future. But Kṛṣṇa has no past, present and future. Therefore He's eternal. We have got past, present and future because we change this body. Now we have got this body... It has got a date.
In such and such date I was born by my father and mother. Now this body will stay for some time. It will grow. It will produce some by-product. Then it will become old. Then dwindle. Then vanish, finish. No more this body. You accept another body. this body's finished. The history of this body, past, present, and future, finished. You accept another body. Again your past, present and future begins. But Kṛṣṇa has no past, present, futures because He does not change His body. That is the difference between ourself and Kṛṣṇa.