JnAna path has been recommended only for the top-level aspirants.
In order for him not to lose his balance by that very qualification of topness, and for his SAdhanA not to be broken by the weight of such extraneous thoughts, the submissive attitude of bhakti becomes necessary.
However much we may woo Brahman with love, unless brahman itself does the ‘revealing’ (known as ‘vivaraNaM’), there is no scope for salvation.
It is with this thought that one has to submit humbly before the ideal goal.
To obtain this submissive attitude it is only Bhakti that helps.