"Oh, yes, I have love of God. I love God." That's all right. But what kind of love? Because we have got love in this experience of this world. A man has got love for the beautiful girl. How long? So long (he) she is beautiful. That's all. And a girl loves a boy—for how long? Oh, so long his pocket is all right. So this is not love. This is not love. This is lust. I love your skin, I love your money, or I love you for some reason. Oh, that is not love. Here it is stated, "What kind of love of God?" Ahaitukī: "Without any cause."
Not that, "My dear God, I love You because You supply me my daily bread." "Oh God, give me my daily bread." This is our prayer. Either in church or in temple, the same thing. In a temple also, generally people go, "My dear Kṛṣṇa, I am in difficulty. Please get me out of it," or "I am in need of some money. Kindly give me a million dollars." Like that. So this is not love of God. This is also very good, that is stated in the Śrīmad-Bhāgavatam, er, Bhagavad-gītā: catur-vidhā bhajante māṁ sukṛtino 'rjuna. If anyone goes to God for asking some benefit, he's also pious man. But he's not a devotee. He may be counted in the list of pious men because he recognizes God, the Supreme; therefore he is pious. But he has not developed the highest principle of religion, love of God.
Prabhupada's lecture - Śrīmad-Bhāgavatam 1.2.6 - London, August 26, 1971