What is the "Brahma Bhuta" Stage and Who is called "Vijanatah"?

Do you know, spiritually, the cause for all our problems in this material life is that the people do not have the right understanding of the Lord and His energies that gives absolute knowledge for him.

If one knows this, he will get freed from miseries.

Why the people do not know that?

Because, they are very busy in material desires and enjoyments.  Though they fail in getting the desires fulfilled, they are trying till they die.

Thus, they waste their life in waste efforts beyond their basic needs. 

SRILA PRABHUPADA SAYS ABOUT THIS:

“The Isopanisad uses the word “vijanatah”.  Vijanatah means ‘One who knows"  that describe a person who understands the “Oneness and difference” of the Lord and His energies. (That is, Lord and His energies are the same and at the same time they are different, like sun and its rays). 

If one is not ‘vijanatah’, one will remain in illusion and suffer. 

But for Vijanatah, ie, one who knows, there is no illusion, no lamentation. 

When you are perfectly convinced that there is nothing except Krsna and Krsna's energies, then there is no illusion or lamentation for you. 

This is known as the “Brahma Bhuta” stage, as explained in the Bhagavad-gita (18.54): “Brahma-Bhutah prasannatma na socati na kanksati”. "One who is transcendentally situated in Brahman realization becomes fully joyful, and he never laments or desires to have anything."