“Hindu,” “Muslim,” or “Christian” is simply a rubber stamp

Primarily, religion means to know God and to love Him. That is religion. Nowadays, because of a lack of training, nobody knows God, what to speak of loving Him. People are satisfied simply going to church and praying, “O God, give us our daily bread.” In the Srimad-Bhagavatam this is called a cheating religion, because the aim is not to know and love God but to gain some personal profit. . . . The title “Hindu,” “Muslim,” or “Christian” is simply a rubber stamp. None of them knows who God is and how to love Him.

– Srila Prabhupada, Science of Self Realization