Chapter 11 verse 52-55
“The Supreme Lord said: This form of mine that you are seeing is exceedingly difficult to behold. Even the celestial gods are eager to see it. Neither by the study of the Vedas, nor by penance, charity, or fire sacrifices, can I be seen as you have seen me.
O Arjuna, by unalloyed devotion alone can I be known as I am, standing before you. Thereby, on receiving my divine vision, O scorcher of foes, one can enter into union with me.
Those who perform all their duties for my sake, who depend upon me and are devoted to me, who are free from attachment, and are without malice toward all beings, such devotees certainly come to me.”
Even this 2 armed form of Bhagwan Krishna in his most personalized form is not visible to mere mortal not even celestial gods. They are unable to see it even with the study of Vedas, doing fire sacrifices or by deep penance. So why is Arjuna getting to see this divine vision and how can someone see this vision? Bhagwan explains that only through deep devotion and surrender to Bhagwan, any being is able to attain Him and have divine vision. Those who perform their duties as an offering to Him, who depend on Him and Him alone, free from all and any desires and only love towards fellow beings are Krishna’s dearest devotees and they will attain Him and behold His divine form.