Chapter 2, Verse 17

Sanskrit

अविनाशि तु तद्विद्धि येन सर्वमिदं ततम्। विनाशमव्ययस्यास्य न कश्चित्कर्तुमर्हति॥

Transliteration

avināśi tu tadviddhi yena sarvam idaṁ tatam vināśam avyayasyāsya na kaścit kartum arhati

Translation

But know That to be imperishable, by which this entire universe is pervaded. No one can bring about the destruction of this immutable reality.

Concepts discussed

• brahman — the imperishable reality pervading all
• sat — that which exists intrinsically, the ground of borrowed existence
• mithya — the world of appearance pervaded by sat
• maya — the power producing the appearance
• paroksha-aparoksha — the tat (“that”) in 2.17 is paroksha-grammar; the asya (“this”) in 2.18 is aparoksha — same Brahman, two modes of reference
• advaita-vedanta — pervasion here is not like light-in-a-room but like water-in-a-wave

Swami’s commentary

The verse establishes that Brahman, the imperishable, is what pervades the universe — not alongside it (as Sankhya would have consciousness alongside matter), but as its very substance. Swami develops the distinction with the Loon Lake image: look into perfectly still water and you see trees, mountains, birds, sky — but there are no trees in the lake, there is only water. What appears as the world is pervaded through-and-through by Brahman; the world is never alongside Brahman.

The grammatical choice of tat (“that”) rather than idam (“this”) signals that Brahman is not an object for the senses. But the verse pairs with 2.18 where Krishna shifts to asya (“this”) — Brahman is beyond the senses and continuously available as one’s own being.

Swami also notes the phrase “by which all this is pervaded” (yena sarvam idaṁ tatam) recurs in three other Gita verses, each framing a different yoga:

• Gita 8.22 — attained by one-pointed devotion (bhakti-yoga)
• Gita 9.4–5 — pervasion doctrine with maya (jnana-yoga)
• Gita 18.46 — worship the Lord through action (karma-yoga)

Combined with 2.17 as sankhya-jnana, the four occurrences thus frame the four yogas.

Episode 6 [13:45–35:00]: The verse unpacked through Loon Lake, the pervasion analogies (ornaments/gold, waves/water, pot/clay), the four-yoga reading of the recurring phrase, and the practical consequence — harmony, non-violence, the sameness of divinity across beings.