Chapter 11, Verse 47
Part of 11: Viśhwarūp Darśhan Yog — विश्वरूपदर्शनयोगश्री भगवानुवाच मया प्रसन्नेन तवार्जुनेदं रूपं परं दर्शितमात्मयोगात्। तेजोमयं विश्वमनन्तमाद्यं यन्मे त्वदन्येन न दृष्टपूर्वम्॥
śhrī-bhagavān uvācha mayā prasannena tavārjunedaṁ rūpaṁ paraṁ darśhitam ātma-yogāt tejo-mayaṁ viśhvam anantam ādyaṁ yan me tvad anyena na dṛiṣhṭa-pūrvam
The Blessed Lord said, "O Arjuna, this Cosmic Form has graciously been shown to you by Me through My own Yogic power. It is full of splendour, primeval, and infinite; this Cosmic Form of Mine has never been seen before by anyone other than you."
Lord Krishna eulogises the Cosmic Form because Arjuna should be regarded to have achieved all his ends by seeing this Cosmic Form. It is also an inducement to all spiritual aspirants to strive to attain this sublime vision. What they should do is explained by the Lord in verse 53 to 55.