God is one supreme controller; true religion is knowing God and obeying His orders, regardless of faith.Listen — Srila Prabhupada Uvaca
Prabhupāda: … revive our whole original consciousness. So any system of religion which revives this consciousness is first-class religion. It doesn't matter whether it is Christian religion or Hindu religion or Muhammadan religion. The system which revives original consciousness—that "I am eternally related with God as part and parcel.
My aim of life is go back to home, back to Godhead, and to act accordingly"—this is God consciousness.
Guest: Let me ask you one question. Now your God is Hare Kṛṣṇa, and Kṛṣṇa ...
Prabhupāda: Your God, my God—there is no difference.
Guest: Exists and..., xeris [Greek: "I know"] Is there any prohibitions in your...
Prabhupāda: God means the supreme controller. So everyone has to accept the supreme controller. So there is no question of "your God," "my God" or "his God." Guest (2): God is one. Prabhupāda: Yes. Guest: So that means... My religion is... Prabhupāda: There is no "my religion" also.
If God is one, then to know God or to abide by the orders of God is religion. According to Bhāgavata definition: dharmaṁ tu sākṣād bhagavat-praṇītam [SB 6.3.19]. Dharma means the orders or the law given by God. Just like law means the order given by the state.