As stated in Bhagavad-gita (15.15), sarvasya caham hrdi sannivisto mattah smrtir jnanam apohanam ca: the Supreme Personality of Godhead, Paramatma, is situated in everyones heart, and from Him come remembrance, knowledge and forgetfulness. The Lord reveals Himself in proportion to ones surrender to Him. Ye yatha mam prapadyante tams tathaiva bhajamy aham [Bg. 4.11]. In responsive cooperation, the Lord reveals Himself in proportion to ones surrender. That which is revealed to one who fully surrenders is different from what is revealed to one who surrenders partially. Everyone naturally surrenders to the Supreme Personality of Godhead, either directly or indirectly. The conditioned soul surrenders to the laws of nature in material existence, but when one fully surrenders to the Lord, material nature does not act upon him. Such a fully surrendered soul is favored by the Supreme Personality of Godhead directly. Mam eva ye prapadyante mayam etam taranti te [Bg. 7.14]. One who has fully surrendered to the Lord has no fear of the modes of material nature, for everything is but an expansion of the Lords glories (sarvam khalv idam brahma), and these glories are gradually revealed and realized. The Lord is the supreme purifier (param brahma param dhama pavitram paramam bhavan [Bg. 10.12]). The more one is purified and the more he wants to know about the Supreme, the more the Lord reveals to him. Full knowledge of Brahman, Paramatma and Bhagavan is revealed to the pure devotees. The Lord says in Bhagavad-gita (10.11):