Sanskrit
परं भूयः प्रवक्ष्यामि ज्ञानानां ज्ञानमुत्तमम् । यज्ज्ञात्वा मुनयः सर्वे परां सिद्धिमितो गताः ॥
paraṃ bhūyaḥ pravakṣyāmi jñānānāṃ jñānam uttamam yaj jñātvā munayaḥ sarve parāṃ siddhim ito gatāḥ
Translation
I will again proclaim that supreme Wisdom, of all wisdom the best, which having known, all the Sages have gone hence to the supreme Perfection.
Annie Besant · The Bhagavad-Gita, translated by Annie Besant (4th ed., 1922) — Wikisource · Public Domain
Explanation
Krishna reopens, after the long field/knower-of-the-field analysis of chapter 13, with a promise rather than an argument: a further wisdom, higher still, that has already carried sages to liberation. That promise is the chapter’s real subject matter — the mechanics of the three gunas, the qualities born of nature that condition every embodied being. Nothing is defined yet; this verse is purely a framing gesture, the same rhetorical move Krishna uses at the opening of chapter 7 before a new phase of teaching.