Pradyumna: Purport: "By intense ecstasy in loving service, the damsels of Vrajabhūmi attained the qualitative oneness with the Lord by dancing with Him on an equal level, embracing Him in nuptial love, smiling at Him in joke and looking at Him with a loving attitude. The relation of the Lord with Arjuna is undoubtedly praiseworthy by devotees like Bhīṣmadeva, but the relation of the gopīs with the Lord is still more praiseworthy because of their still more purified loving service. By the grace of the Lord, Arjuna was fortunate enough to have the fraternal service of the Lord as chariot driver, but the Lord did not award Arjuna with equal strength. The gopīs, however, practically became one with the Lord by attainment of equal footing with the Lord."
"Bhīṣma's aspiration to remember the gopīs is a prayer to have their mercy also at the last stage of his life. The Lord is satisfied more when His pure devotees are glorified, and therefore Bhīṣmadeva has not only glorified the acts of Arjuna, his immediate object of attraction, but also he has remembered the gopīs, who were endowed with unrivalled opportunities by rendering loving service to the Lord. The gopīs equality with the Lord should never be misunderstood to be like the sāyujya liberation of the impersonalist. The equality is one of perfect ecstasy, where the differential conception is completely eradicated, for the interests of the lover and the beloved become identical."
Prabhupāda: So Lord Caitanya Mahaprabhu said, ramyā kācid upāsanā vrajavadhū-vargeṇa yā kalpitā (Caitanya-manjusa): there is no better method of worship than the system invented by the gopīs. So gopīs' invention of worshiping Kṛṣṇa was to remain always Kṛṣṇa conscious, without any material profit. That is the superexcellence of gopīs. They never expected any return from Kṛṣṇa. That was not their business. "Kṛṣṇa, we have done so much for You, You cannot give me this benediction?" No, they never asked like that. That is the first-class worship. "Kṛṣṇa, You take whatever You like from us, but we do not ask anything, neither we have any need." This is gopīs worship. "We have got everything to give You, and we have no need to ask You." This is gopīs worship.
Generally, they worship God, needy, ārtaḥ arthārthī. Ārtaḥ means diseased, arthārthī means in need of money. People generally go to church, temple, when they are suffering from some ailments or need of money, these two classes. Another two classes: jijñāsuḥ, jñānī. Jñānī means who is after pure knowledge, and jijñāsuḥ means inquisitive—what is the nature of God. These are . . . they are higher section. But they are not bhaktas. Just like there are many philosophers, they also talk of God, but they are not bhaktas. But because they are talking of God, they are getting some benefit. Just like if you handle with fire, you perceive some warmth automatically.
So these four classes of men, they are not bhaktas, devotees—ārtaḥ, arthārthī, jñānī and jijñāsuḥ. But because they come to Kṛṣṇa for some benefit, some way or other they offer their service, because praying is also another service. There are nine kinds of services: śravaṇaṁ kīrtanaṁ viṣṇoḥ smaraṇaṁ pāda-sevanam, arcanaṁ vandanam (SB 7.5.23). Vandanam, this is also service. But because this service is rendered for some motive to mitigate the sufferings, ārtaḥ arthārthi, or to satisfy some inquires, they are not pure devotion.