At the end of many lives, the man of knowledge attains Me. Extremely rare is the great soul who knows all that exists is Vāsudeva (Krishna).
Krishna speaks further about the greatness, supremacy, of singular devotion and the one who is able to gain such spiritual exclusiveness. To attain Krishna or Krishnatva is very rare. It transpires at the end of many lives, during which the seeker has to strive wholeheartedly.
To begin with, one thinks God is at great distance, as the very source of Creation, and hence unapproachable. He is unimaginably vast, surpassing all. This idea lingers and rules the seeker, until at last clarity dawns, and he is able to think of the Lord as present everywhere!
Whatever the senses perceive, he feels, is penetrated by the Lord. There is nothing besides the Lord. He is the source and substratum of everything and all.
The world is full with pañca-bhūtas (five elements). The Lord is permeating them. Nothing is beyond Him. Everywhere is He. This state is very lofty. One whose mind is lofty, alone can attain it. Such a one is a rare Mahātmā, high-souled, says Krishna. He finds everything and all as Lord Vāsudeva.