Indian man (2): I have a question. Is it necessary that God should be worshiped in particular form only?
Prabhupāda: Well, there is only one form: bhakti. There is no other form. It is not a particular; it is the only. Just like there are nine holes in your body. The only one hole will be used for eating, not other holes. If you pushed your foodstuff in other holes, it will be useless. Similarly, God is one, and to understand God the only process is bhakti. That's all. There is no other process.
Indian man (2): How may a devotee arrive to this particular form?
Prabhupāda: This is in the śāstras. God says, bhaktyā mām abhijānāti (BG 18.55): "Only through devotion one can understand Me." So not the devotee has discovered. God says. "This is the only way." If you want to know God, you must know Him by the process He recommends. Don't discover your own way.
Not that yato mata tato patha, you discover all rascal mata and God will be available. No. If you want to know God, then this is the only: bhaktyā mām abhijānāti yāvān yaś cāsmi tattvataḥ (BG 18.55). That is the only way. There is no other way.