Sahasreṣu: within many millions of persons. Kaścid yatati siddhaye. One understands the responsibility of his life and tries to make it perfect, kaścid yatati siddhaye. Siddhaye means "perfection." And yatatām api siddhānāṁ. Siddhā means you may try to become perfect, but that does not mean you have become perfect. If you fail, then you do not become perfect. But next line says, yatatām api siddhānāṁ: after endeavoring for perfection of life, one, somebody who has already . . . who have already become perfect, out of them, somebody may understand what is Kṛṣṇa. So Kṛṣṇa understanding is not so easy.
- manuṣyāṇāṁ sahasreṣu
- kaścid yatati siddhaye
- yatatām api siddhānāṁ
- kaścin māṁ vetti tattvataḥ
- (Bg 7.3)
But because by the blessings of the Supreme Lord anyone can achieve anything, here is the blessing of Lord Caitanya, who is Kṛṣṇa Himself. He is very sympathetic with the fallen souls of this age. He understands that these people, these conditioned souls, cannot execute the regular process of perfection. Therefore He has bestowed His benediction that you simply chant Hare Kṛṣṇa and be perfect. That is the saṅkīrtana movement. But kaścid—therefore although it is meant for a particular person out of many thousands of millions of persons, but still, by the blessings of Lord Caitanya, anyone can take it up. Anyone. It is freely being distributed. So kecit kevalayā bhaktyā. Śukadeva Goswāmī recommends that somebody takes to this bhakti-yoga process, kevalayā-bhakta. Bhakta means bhakti-yoga. Kevalayā. Kevalayā means without any adulteration. Just like if I say "only milk," that means without any water, without any adulteration: "only this." "Only" means kevalayā; "only." "Only" means pure, the pure of bhakta, pure devotional service.
There are impure and pure everything; similarly this devotional service is pure and impure also. What is pure and impure? What is pure? That definition you will find in our Nectar of Devotion. That definition is anyābhilāṣitā-śūnyaṁ (Bhakti-rasāmṛta-sindhu 1.1.11):
without any motive.