Bhagavad Gita Verse 45, Chapter 11

adrishtapoorvam hrishitosmi drishtvaa bhayena cha pravyathitam mano me |
tadeva me darshaya devaroopam praseeda devesha jagannivaasa || 45 ||
 
Seeing you form that was never seen before, I am overjoyed and (yet) fearful, my mind is disturbed. Show me that divine form. Be pleased, O Lord of lords, O abode of the universe.
 
adrishtapoorvam : prior unseen
hrishitaha : overjoyed
asmi : I am
drishtvaa : seeing
bhayena : fearful
cha : and
pravyathitam : disturbed
manaha : mind
me : my
tadeva : that
me : to me
darshaya : show
devaroopam : divine form
praseeda : be pleased
devesha : O Lord of lords
jagannivaasa : O abode of the universe
 
Fear is one of our most primal emotions. At some point or the other in our lives, we have encountered fear of losing our job, losing a loved one, fear of an angry confrontation, stage fright and so on. But we can boil all kinds of fear down to three things. First, the fear of losing something that is “ours”. This is the fear of losing our life, our job, our loved ones and so on. Next is the fear of loss of knowledge, or being duped. Third is the fear of losing joy and happiness, fear of sorrow in other words. We can sum it up in this manner: we are afraid of losing our existence, knowledge and happiness.
 
However, if we recall the teaching of the Gita so far, especially from the second chapter, we know that our true nature is the aatmaa, the eternal essence which is infinite existence, knowledge and happiness. So then, the cause of fear is the ego, the delusion that we are not the eternal essence. There is no scope for fear when we know our true nature as the infinite eternal essence. But if we assume that “I am the body”, then all the problems and fears of the body such as disease, old age, death etc become our problems. The fear of death, which is actually the fear of losing the existence of the body, becomes our fear.
 
So then, why did Arjuna fear Shri Krishna’s cosmic form? For a brief moment, Arjuna’s ego had vanished when he considered himself part and parcel of the cosmic form. When his ego came back, it brought with it all the incorrect associations with the body, mind and so on. Arjuna then saw the cosmic form as something outside of himself, something that could destroy him. He acknowledged his fear to Shri Krishna, begging him to go back to his original form.

Bhagavad Gita Verse 20, Chapter 11

dyaavaaprathivyoridamantaram hi vyaaptam tvayaikena dishashcha sarvaahaa |
drashtvaadbhutam roopamagram tavedam lokatrayam pravyathitam mahaatman || 20 ||
 
This distance between heaven, earth is and all directions is pervaded only by you alone. Having seen this, your fascinating and terrible form, the three worlds are afraid, O great one.
 
dyaavaaprathivyoho : heaven and earth
idam : this
antaram : distance
hi : only
vyaaptam : pervaded
tvayaa : by you
ekena : one
dishashcha : directions
sarvaahaa : all
drashtvaa : having seen
adbhutam : fascinating
roopam : form
agram : terrible
tava : your
idam : this
lokatrayam : three worlds
pravyathitam : afraid
mahaatman : O great one
 
Nowadays, computers can be trained to recognize objects and faces. They do this by first taking a snapshot of a scene, and then differentiating between what is space is what is not. If they can do this differentiation correctly, they can compare the outlines of the “not-space” with outlines of familiar objects to arrive at a conclusion such as “this is a box” and so on.
 
Our eyes work in pretty much the same way. Whenever they see space, they do three things. First, they separate whatever they see as not-space and call those things “objects”. Next, they send those objects to the mind which uses its memory to say “this is a box and a key”. But in addition to recognizing objects, the mind also automatically adds another thought. Since the box and key are separated by space, they are far away from me and therefore not a part of me.
 
Our minds are conditioned to believe that Ishvara is sitting somewhere far away. He is separated from us by space, by distance. But when Arjuna saw the cosmic form, he realized that space is not different from Ishvara. In fact, Shri Krishna himself said that space is part of his nature in the seventh chapter. Ishvara is not separate and far away from us, he is with us all the time. In fact, he only exists, “ekena”, all alone, by himself. We are not different from him. This is the main point of this shloka. Only by constantly remembering the cosmic form will we truly understand this message.
 
Now, Ishvara’s ugra roopa, his terrible form, slowly replaces his saumya roopa, his pleasant for. For every pleasant experience in the world, there has to be a corresponding unpleasant experience as well. Once you label something as “good”, there will be something “bad” by default. Seeing this frightful form of Ishvara, with fire coming out of all his mouths, all the three worlds were beginning to worry.