Therefore, no one can manufacture any system of religion without the principle of devotional service to the Lord. As we find in the Sixth Canto of Srimad-Bhagavatam, the initiator of religious principles is the Lord Himself. In Bhagavad-gita also we find that the Lord condemns all forms of religion other than that which entails the process of surrendering unto the Supreme. Any system which leads one to the devotional service of the Lord, and nothing else, is actually religion or philosophy. In the Sixth Canto we find the following statements of Yamaraja, the controller of all unfaithful living entities:
dharmam tu saksad bhagavat-pranitam
na vai vidur rsayo napi devah
na siddha-mukhya asura manusyah
kuto nu vidyadhara-caranadayah
svayambhur naradah sambhuh
kumarah kapilo manuh
prahlado janako bhismo
balir vaiyasakir vayam
dvadasaite vijanimo
dharmam bhagavatam bhatah
guhyam visuddham durbodham
yam jnatvamrtam asnute
"The principles of religion are initiated by the Supreme Personality of Godhead, and no one else, including the sages and demigods, can manufacture any such principles. Since even great sages and demigods are unauthorized to inaugurate such principles of religion, what to speak of others--the so-called mystics, demons, human beings, Vidyadharas and Caranas living in the lower planets? Twelve personalities--Brahma, Narada, Lord Siva, Kumara, Kapila, Manu, Prahlada Maharaja, Janaka Maharaja, Bhisma, Bali, Sukadeva Gosvami and Yamaraja--are agents of the Lord authorized to speak and propagate the principles of religion." (Bhag. 6.3.19-21)