Sanskrit
मया प्रसन्नेन तवार्जुनेदम् रूपं परं दर्शितमात्मयोगात् । तेजोमयं विश्वमनन्तमाद्यम् यन्मे त्वदन्येन न दृष्टपूर्वम् ॥
mayā prasannena tavārjunedaṃ rūpaṃ paraṃ darśitam ātmayogāt tejomayaṃ viśvam anantam ādyaṃ yan me tvadanyena na dṛṣṭapūrvam
Translation
Arjuna, by My favour thou hast seen, This loftiest Form by yoga's self revealed! Radiant, all-penetrating, endless, first, That none except thyself hath ever seen.
Annie Besant · The Bhagavad-Gita, translated by Annie Besant (4th ed., 1922) — Wikisource · Public Domain
Explanation
Krishna’s answer opens by naming the mechanism before anything else: “prasannena,” by my grace, and “ātmayogāt,” through my own yogic power — not Arjuna’s discipline, not anything he earned, but a gift given. That framing matters for what’s coming in verses 48 and 53-54: if the vision was granted rather than achieved, then no achievement — no study, no ritual, no austerity — could have produced it either, and the chapter is about to say exactly that. “Na dṛṣṭapūrvam,” never seen before, closes the verse by confirming what the whole hymn already assumed: Arjuna has just had an experience unique in the tradition itself, not merely unique to him.