In Srimad Bhagavad-Gita the first six chapters delineate karma-yoga or the yoga of actions and the last six chapters delineate jnana-yoga or the yoga of knowledge. Since bhakti-yoga is placed in the middle six chapters, it should be understood that bhakti which is devotion is the supreme shelter of karma and jnana. At Haridwar in maya-tirtha which is prominent among the seven holy tirthas where Srimad-Bhagavatam was recited, bhakti or devotion alone has been established as the life giving source of jnana-vairagya which is knowledge and renunciation. Without receiving the mercy of Bhakti-devi, endeavors of karma, jnana and yoga cannot bequeath their respective rewards and desired fruits.
From Bhagavad-Gita, chapter 9, verse 14 which begins: satatam kirtyanto mam, it is understood that kirtana or glorification of the Supreme Lord Krishna's nama, rupa, guna and lila which correspondlingly is His name, form, qualities and pastimes and engaging in the nine-fold limbs of bhakti is factual and actual worship of the Supreme Lord Krishna. It is said in Caitanya-caritamrta: aprakrta vastu nahe prakrta gocara, aprakrta objects are beyond the scope of prakrta, materialism and jnana, intelligence. In that exalted realm concepts like conceit, ego, scholarship and other mundane ideas are not applicable. Exclusive and unalloyed saranagati or complete surrender is the only means of attaining the mercy of the Supreme Lord Krishna.
Many persons who are unduly intoxicated by their mundane scholarship and ego, falsely claim that they understand and can guide others to understand the import of Srimad Bhagavad-Gita and the Vedic scriptures. But they simply deceive themselves and mislead others. Thus Lord Krishna has instructed in Bhagavad-Gita, chapter 10, verse 10:
Bhagavat-tattva or knowledge of divinty can only be thoroughly known with the help and blessings of buddhi-yoga or spiritual intelligence leading to communion with God This can only be bequeathed by the creator of all existence the Supreme Lord Krishna thru his bonafide representative in disciplic succession known as the spiritual master. Those who try to understand the real imports of the Bhagavad-Gita by accepting the shelter of the lotus feet of the Supreme Lord Krishna, the bonafide guru in authorised disciplic succession directly descending from the Supreme Lord Krishna Himself and the Vaisnavas who are the Supreme Lords dearmost servitors; can very easily cross over the endless cycle of birth and death in the ocean of material existence, and becoming eligible attain para-bhakti, supreme service unto the lotus feet of the Supreme Lord Krishna.
Thus in closing the sarva-guhyatam or the confidential words of the Bhagavad-Gita, have revealed the supreme object to be ascertained and has been established. This is also called pancam purusartha, the highest stage of sadhana and bhajana. Through a comparative discussion, Lord Krishna has established the supremacy of bhakti-yoga. Sri Caitanya Mahaprabhu who has descended to purify the age of Kali along with His associates has performed this supremely benevolent act for the sake of all living being by illuminating the path of he most worshipable Supreme AbsoluteTruth and Ultimate Reality which is the apex of sadhana and zenith of bhajana. This is their causeless and compassionate magnanimty towards all created beings. Therefore this is the only process which is authorized by the auspices of disciplic succession and fully approved and recommended by the previous acaryas, reflective sages, sincere scholars and pious people throughout the entire world.