This Devarṣi means Nārada, saintly sage among the demigods. He is also one of the demigods. So he compiled Vedic principles for executing devotional service, Nārada Pañcarātra. Our method, this devotional service, is according to the Nārada Pañcarātra. Especially in this age, Vedic system is not very much convenient. It is very strict. Just like according to Vedic system, if one wants to become a brāhmin, he must be born of a brāhmin father. Otherwise he cannot be accepted as a brāhmin. But according to the Nārada Pañcarātra system, even if one is lowborn, he can be accepted as a brāhmin by this reformatory process. Because kalau śūdra sambhavaḥ—everyone in this age is a śūdra. Śūdra means no intelligence, little better than animals, that's all.
So how from the śūdras a brāhmin can be selected? According to the Vedic system, it is not possible. One, to be accepted as brāhmin, must be son of a brāhmin. That means background of the person must be brahminical culture. But if people are śūdras, where is the background of brahminical culture? Therefore Nārada, he is Vaiṣṇava; he is very compassionate to the fallen souls. He is travelling all over the universe to make Vaiṣṇavas. He made many sons of Dakṣa Mahārāja Vaiṣṇavas. So Dakṣa Mahārāja became very angry upon him: "Nārada, you come and you train my sons as Vaiṣṇavas, and they do not take care of the family affairs. So I curse you: You cannot stay anywhere more than some time." So even a Vaiṣṇava has to face some difficulty while preaching devotional service; even Nārada.