PURPORT

In Bhagavad-gita it is stated:

naham prakasah sarvasya
yoga-maya-samavrtah
mudho 'yam nabhijanati
loko mam ajam avyayam

"I am never manifest to the foolish and unintelligent. For them I am covered by My eternal creative potency [yogamaya]; and so the deluded world knows Me not, who am unborn and infallible." (Bg. 7.25)

The Lord always reserves the right of not being exposed to everyone. The devotees, however, are always engaged in the service of the Lord, serving with the tongue by chanting the Hare Krsna mantra and tasting maha-prasada. Gradually the sincere devotee pleases the Supreme Personality of Godhead, and the Supreme Lord reveals Himself. One cannot see the Supreme Lord by making personal efforts. Rather, when the Lord is pleased by the service of a devotee, He reveals Himself.