Bhakti-rasāmṛta-sindhu has given considerable discussion about nitya-siddha and sādhana-siddha devotees. Nitya-siddha devotees come from Vaikuṇṭha to this material world to teach, by their personal example, how to become a devotee. The living entities in this material world can take lessons from such nitya-siddha devotees and thus become inclined to return home, back to Godhead. A nitya-siddha devotee comes from Vaikuṇṭha upon the order of the Supreme Personality of Godhead and shows by his example how to become a pure devotee (anyābhilāṣitā-śūnyam [Bhakti-rasāmṛta-sindhu anyābhilāṣitā-śūnyaṁ
jñāna-karmādy-anāvṛtam
ānukūlyena kṛṣṇānu-
śīlanaṁ bhaktir uttamā