ataeva 'bhakti' — kṛṣṇa-prÄptyera upÄya
'abhidheya' bali' tÄre sarva-Å›Ästre gÄya
ataeva - therefore; bhakti - devotional service; kṛṣṇa-prÄptyera - of achieving the lotus feet of Kṛṣṇa; upÄya - the only means; abhidheya - abhidheya; bali' - calling; tÄre - this system; sarva-Å›Ästre - in all revealed scriptures; gÄya - is described.
As Lord Kṛṣṇa states in the Bhagavad-gÄ«tÄ (18.55).
bhaktyÄ mÄm abhijÄnÄti yÄvÄn yaÅ› cÄsmi tattvataḥ
tato mÄá¹ tattvato jñÄtvÄ viÅ›ate tad-anantaram
“One can understand Me as I am, as the Supreme Personality of Godhead, only by devotional service. And when one is in full consciousness of Me by such devotion, he can enter into the kingdom of God.â€
The aim of life is to get rid of the material conditioning and enter into spiritual existence. Although the Å›Ästras prescribe different methods for different men, the Supreme Personality of Godhead says that one ultimately must accept the path of devotional service as the assured path of spiritual advancement. Devotional service to the Lord is the only process actually confirmed by the Lord. Sarva-dharmÄn parityajya mÄm ekaá¹ Å›araṇaá¹ vraja (Bg. 18.66). One must become a devotee if one wants to return home, back to Godhead, and become eternally blissful.