Sanskrit
स एवाऽयं मया तेऽद्य योगः प्रोक्तः पुरातनः । भक्तोऽसि मे सखा चेति रहस्यं ह्येतदुत्तमम् ॥
sa evāyaṃ mayā te 'dya yogaḥ proktaḥ purātanaḥ bhakto 'si me sakhā ceti rahasyaṃ hy etad uttamam
Translation
This same ancient yoga hath been to-day declared to thee by Me, for thou art My devotee and My friend; it is the supreme Secret.
Annie Besant · The Bhagavad-Gita, translated by Annie Besant (4th ed., 1922) — Wikisource · Public Domain
Explanation
Krishna closes the frame narrative he opened in verse 1 by naming Arjuna directly as the reason for receiving this “supreme Secret” today: devotion and friendship, not merit or seniority, are given as the qualification. That’s a notable shift from the royal-sage lineage of verse 2 to a personal relationship as the basis for transmission, and it’s this claim of continuity and privilege that Arjuna immediately questions.