If Krishna endows his devotee with the power to know his universal form, it is because the request of the latter (or the latter) is not motivated by personal desires, but it is in order to prove the authenticity of his statements. So in the future, men will be able to understand that Krishna not only presented Himself as Supreme Being theoretically and philosophically, but He also manifested Himself as such. The devotee of Krishna will therefore have to confirm for the future the absolute supremacy of the Lord.
Logos 343
The Blessed Lord said: “This shape, Mine, that you are now contemplating, it is very difficult to see. The celestial beings themselves ceaselessly yearn to discover it, this form so dear”.
Krishna, after having put an end to the revelation of its universal form, which it is rare to see, teaches that the this vision cannot be achieved through sacrifices, or other similar practices. Now the Lord indicates that his two-armed form is even more secret, more difficult to see. Strictly speaking, by adding a little devotional service to the various practices of the study of the Vedas (the original holy scriptures), severe asceticism, philosophical speculation, etc., we can see the universal form of the Lord; but without devotional service, impossible to see this radiant two-armed form. Now, beyond this universal form is the “human” form of Krishna, his two-armed form; and the latter is even more difficult to know, even for celestial beings as powerful as Brahma, or Siva. All these celestial beings desire to see the Lord in this two-armed form.
It should be understood that denigrating Krishna in his two-armed form can only be done by a fool of the most common kind, since Heavenly beings of the rank of Brahma and Siva yearn to see the Lord in this same absolute primordial form. His body is entirely spiritual, all of bliss and eternity, this body has nothing material. For those who seek to know him, Krishna remains a problem because they know nothing about him. Indeed, those who study the sacred writings with material eyes think that God is only an important historical figure, or a philosopher of vast erudition. They don't see that He's no ordinary man. Some recognize his immense power, but believe that he still had to put on a material body. They thus come to the conclusion that Absolute Truth is impersonal, formless, that Krishna, God is only a borrowed personal aspect, related to material nature. This is developing a material concept of the Supreme Lord, which is obviously wrong.
We have stated it many times, Krishna, God, the Supreme Person is veiled by his internal power. He is entirely spiritual, his body and his Soul are One, without any difference. It cannot be seen by everyone. Only the soul to whom He reveals Himself can see and admire him. Only the submissive soul can truly know the Absolute Truth,