Lord Krishna said: As I am pleased with you,
O Arjuna, this brilliant, universal, infinite, primordial, supreme Form, which none else than you has ever seen, has been shown to you by Me, by dint of the power of the Self.
Krishna assuages Arjuna’s fear by saying he is pleased with Arjuna. That is why he instantly showed Viśva-rūpa, which none else has seen earlier. The Self within, devoid of colour and shape, alone has the potential to manifest infinite splendours and shapes.
Viśva-rūpa depicts powers and potentials of the Self alone. Potentials to create, sustain and destroy belong only to the Self, none else. All are the Self’s own inscrutable powers.