As the Supreme Lord is Absolute, Infinite, He is asamordha - there is no equal to Him and nothing is greater than Him. Nothing, not even a dust particle can be outside the Infinite and Absolute. If there was anything outside the Absolute, then the Absolute would lose His position. As there is nothing equal to Him and nothing greater than Him, nobody can realise Him without His will. There cannot be many paths to get the Absolute. He is One, so realisation of Him is also one - to submit to His will. Service means to act according to the will of the served. This is called bhakti. Bhakti is the only way to attain God. The aspirant who has accepted the path of bhakti is called bhakta. The karmi, jnani or yogi cannot get Bhagavan because their objective is not Bhagavan. Karmis want temporary benefits, both in this world and in the higher worlds. Jnanis want emancipation - merging into the Formless Impersonal Brahma. The ultimate goal of yogis is to attain the 18 kinds of yogasiddhis or Kaivalya (merging into Paramatma). Without the grace of a bhakta nobody can get bhakti. `bhaktistu bhagvad bhakta sangena parijayate' - Only by the association of a shuddha bhakta can you get bhakti. A shuddha bhakta or Krishna bhakta is very scarce - `koti-mukta-madhye `durlabha' eka krishna-bhakta' - Amongst millions of emancipated souls, it is very hard to get one shuddha bhakta. Ignoring the bhakta, no aspirant can get contact with Bhagavan.