Sādhu is representative of Kṛṣṇa. Or Kṛṣṇa directly . . . sādhu will never say that, "You serve me." Sādhu will say: "Serve Kṛṣṇa." Therefore we have to approach Kṛṣṇa through sādhu, not directly. That is not . . . that is confirmed by Vaiṣṇava ācārya, Narottama dāsa: chāḍiyā vaiṣṇava-sevā nistāra pāyeche kebā. You cannot directly approach Kṛṣṇa. You have to go through the media, the transparent via media of his representative. Therefore Kṛṣṇa, Mahā . . . Sādh . . .
- ei rūpe brahmāṇḍa bhramite kona bhāgyavān jīva
- guru-kṛṣṇa-kṛpāya pāya bhakti-latā-bīja
- (CC Madhya 19.151)
Caitanya Mahāprabhu says to Rūpa Gosvāmī that we are wandering in this way, brahmāṇḍa, whole universe. There are different types, or forms, of body, 8,400,000. And there are millions and trillions of planets, up and down. Oṁ bhūr . . . bhūr bhuvaḥ svaḥ. Bhūrloka, Bhuvarloka, Svarloka, Janaloka, Maharloka, Tapoloka. Then Tala, Atala, Vitala, Pātāla, Rasātala . . . there are so many planetary system. Caturdaśa-bhuvana. This universe is called fourteen different planetary system, and we are wandering in these different planetary system. If we are pious, then we are promoted to the higher planetary system, Svargaloka, Janaloka, Maharloka, Tapoloka, Brahmaloka, Satyaloka. There are so many . . . Siddhaloka. And if we are impious, then we are downtrodden. We go down more and more. Ūrdhvaṁ gacchanti sattva-sthāḥ (BG 14.18). If you are situated in sattva-guṇa, then you are promoted to the higher planetary system: adho gacchanti tāmasāḥ. Jaghanya-guṇa-vṛtti-sthā adho gacchanti tāmasāḥ. If you are infected with tamo-guṇa, then you go down, down, down, down. Madhye tiṣṭhanti rājasāḥ: and if we are infected by the modes of passion, then we keep ourself in the middle. But Kṛṣṇa says in the Bhagavad-gītā, ābrahma-bhuvanāl lokāḥ punar āvartino 'rjuna (BG 8.16). Even if you go to the highest planetary system—it is called Brahmaloka—where the duration of life is very, very long . . . that is described in the Bhagavad-gītā, sahasra-yuga-paryantam ahar yad brahmaṇo viduḥ (BG 8.17).