Very simple language. He (Narottama dāsa Ṭhākura) says that there are three ways: karma-kāṇḍa, jñāna-kāṇḍa and upāsanā-kāṇḍa. Upāsanā-kāṇḍa means bhakti. The best of the upāsanā-kāṇḍa is bhakti. Ārādhanānāṁ sarveṣāṁ viṣṇor ārādhanaṁ param (Padma Purāṇa). There are upāsanā, worshiping various different types of demigods. That is commentated in śāstra, that if you want this profit, then you worship this demigod, this demigod, this demigod. Generally they are summarized into five, pañcopāsanā: the Surya, Gaṇeśa, Lord Śiva, Lord, er, Mother Durgā and Lord Viṣṇu. These are called pañcopāsanā. They are recommended, summarized. Otherwise, there are thirty-three crores of devas. So these devas are worshiped according to the version of Kṛṣṇa: kāmais tais tair hṛta-jñānāḥ yajante anya-devatāḥ (BG 7.20). They are not accepted, those who are after pañcopāsanā.
Anyway, the business is . . . pūjā means I call you and offer you some respectable . . . (indistinct) . . . some foodstuff, and then very much seated very comfortably. Naturally I may ask, "What do you want?" Then I’ll explain, "Give me this. Give me that. Give me that." That is going on. That is called pūjā. But those who are worshiping the Supreme Personality of Godhead, that is not called pūjā; that is called sevā, kṛṣṇa-sevā. We never say kṛṣṇa-pūjā. Nobody . . . never says like that. Sevā. Sevā means it is my duty. I am eternal servant of Kṛṣṇa. Sevā is my duty. So there is difference between pūjā and sevā. Pūjā means I flatter you to satisfy you, and after being satisfied, you may offer me something, or I’ll ask you something and you offer me. That is called pūjā. That is devatā-pūjā. But, so when you come to Kṛṣṇa, or Viṣṇu, that is not pūjā; that is sevā. Sevā. So as Kṛṣṇa is offered sevā, service, similarly His representative, he is also offered sevā. So upāsanā, upāsanā-kāṇḍa.