We are separated from God not because of physical distance but because of the ignorance within us, which has existed since infinite lifetimes. Thus to overcome miseries and to reach God we need knowledge. But knowledge cannot be attained simply by the thinking power of our intellect because the intellect itself is where the ignorance resides. So its own thinking capacity is inherently incapable of destroying its ignorance.
Read Out the complete article to know about the way how we can know about GOD on the Indiapost website.