CC Madhya 10.13

vaiṣṇavera ei haya eka svabhāva niścala
teṅho jīva nahena, hana svatantra īśvara
Synonyms: 
vaiṣṇavera — of great devotees; ei — this; haya — is; eka — one; svabhāva — nature; niścala — unflinching; teṅho — He; jīva — conditioned soul; nahena — is not; hana — is; svatantra — independent; īśvara — controller.
Translation: 
“A Vaiṣṇava travels to places of pilgrimage to purify them and reclaim fallen conditioned souls. This is one of the duties of a Vaiṣṇava. Actually, Śrī Caitanya Mahāprabhu is not a living entity but the Supreme Personality of Godhead Himself. Consequently, He is a fully independent controller, yet in His position as a devotee, He carries out the activities of a devotee.”
Purport: 

Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura points out that because there are many permanent residents in holy places who do not precisely follow the rules and regulations governing living in a sacred place, exalted devotees have to go to these places to reclaim such persons. This is the business of a Vaiṣṇava. A Vaiṣṇava is unhappy to see others materially enmeshed. Śrī Caitanya Mahāprabhu taught these activities of a Vaiṣṇava although He is the worshipable Deity of all Vaiṣṇavas, the complete and independent Supreme Personality of Godhead. He is pūrṇaḥ śuddho nitya-muktaḥ — complete, completely uncontaminated and eternally liberated. He is sanātana, for He has no beginning or end.