Nāma cintāmaṇiḥ kṛṣṇaś caitanya-rasa-vigrahaḥ (CC Madhya 17.133). Nāma, the Lord's name, is not material; it is spiritual. The sound is Brahma, śabda-brahma. Vedic sounds, they are śabda-brahma. They are not material sound. So nāma cintāmaṇiḥ, spiritual. Kṛṣṇa . . . Kṛṣṇa and Kṛṣṇa's name, there is no difference. Nāma cintāmaṇiḥ kṛṣṇaś caitanya-rasa-vigrahaḥ.
Rasa, the transcendental mellows. Every one of us is searching after some mellow, some pleasure from everything. Kṛṣṇa is the reservoir of all pleasures, rasa-vigraha, fully personified. Wherever there is Kṛṣṇa, there is rasa, a transcendental mellow, enjoyment, relishable. Very Kṛṣṇa presence.
For instance, that . . . when in the Battlefield of Kurukṣetra fighting was going on between Kṛṣṇa and Bhīṣma, so both of them . . . Kṛṣṇa, of course, did not touch any weapon, because He promised. But Grandfather Bhīṣma was very severely piercing Kṛṣṇa's body with arrows, and Kṛṣṇa was enjoying. That is the relationship between Kṛṣṇa and His devotee.
Kṛṣṇa can be worshiped, Kṛṣṇa can be loved, by any capacity. The gopīs loved Kṛṣṇa out of seemingly lust, lusty desires, and Śiśupāla remembered Kṛṣṇa out of anger. Kāmāt krodhād bhayāt. And Kaṁsa remembered always Kṛṣṇa out of fear. And of course they were not devotees. Devotees means they should be always favorably disposed to Kṛṣṇa, not inimical.
But Kṛṣṇa is so kind, even somebody is disposed to Him in an inimical attitude, he also gets salvation. For example, Kaṁsa, Dantavakra, Śiśupāla, Hiraṇyakaśipu, Rāvaṇa—they were not friendly. Still, because they thought of the Supreme Personality of Godhead, consciousness were there, but it was unfavorable.