Suppose I shall live fifty years or a hundred years maximum. So out of them, one moment lost, it will be never returned. From our birth . . . When a child is born we ask the parents when the child is born. The parents says, "This child was born in the morning, ten o'clock." So if the child is born at ten o'clock, and I am asking at eleven o'clock, the one hour life of the child lost. Eleven o'clock means the child has already died one hour, out of his one hundred years.
So for Vaiṣṇava it is not like that. It is not like that. Na hanyate hanyamāne śarīre (BG 2.20). This is material calculation: one hour lost, two hours lost. The body's life is transient; it is losing one moment, one hour. But spiritual life is different. Nityaḥ śāśvato yam, na hanyate hanyamāne śarīre. So, as Kṛṣṇa comes, yadā yadā hi dharmasya glānir bhavati bhārata tadātmānaṁ sṛjāmy aham (BG 4.7). Kṛṣṇa is eternal, but still, He appears. The same example: just like the sun is in the sky, but we see in the morning it appears; in the evening it retires. That is defectness of our eyes. Actually the sun is always there. So similarly Vaiṣṇava, as Kṛṣṇa comes, yadā yadā hi dharmasya glānir, similarly, a Vaiṣṇava—means the confidential servant of Kṛṣṇa—he also comes for some purpose by the order of the master. So their life and Kṛṣṇa's life, it is same. There is no question of past, present, future. Nityaḥ. Nityaḥ śāśvato 'yam, na hanyate hanyamāne śarīre (BG 2.20). So tirobhava avirbhava, they are the same thing as the appearance and disappearance of sun.