4.10 Bahavah, many; vita-raga-bhaya-krodhah, who were devoid of attachment, fear and anger; manmayah, who were absorbed in Me, who were knowers of Brahman, who were seers of (their) identity with God; mam upasrithah, who had taken refuge only in Me, the supreme God, i.e. who were steadfast in Knowledge alone; and were putah, purified, who had become supremely sanctified; jnana-tapasa, by the austerity of Knowledge-Knowledge itself, about the supreme Reality, being the austerity; becoming sanctified by that austerity of Knowledge-; agatah, have attained; madbhavam, My state, Goodhood, Liberation.
The particular mention of 'the austerity of Knowledge' is to indicate that steadfastness in Knowledge does not depend on any other austerity.
'In that case, You have love and aversion, because of which You grant the state of identity with Yourself only to a few but not to others?'
The answer is: