Text 18]]
Nature, the Enjoyer, and Consciousness
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creation, everything rests in His omnipotence, and after annihilation, everything again returns to rest in Him. These are the confirmations of Vedic hymns.  Yato vā imāni bhūtāni jāyante yena jātāni jīvanti yat prayanty abhisaṁviśanti tad brahma tad vijjñāsasva.  ( Taittirīya Upaniṣad, 3.1 )
TEXT 18
ज्योतिषामपि तज्ज्योतिस्तमसः परमुच्यते । ज्ञानं ज्ञेयं ज्ञानगम्यं हृदि सर्वस्य विष्ठितम् ॥१८॥
jyotiṣām api taj jyotis tamasaḥ param ucyate jñānaṁ jñeyaṁ jñāna-gamyaṁ hṛdi sarvasya viṣṭhitam
jyotiṣām —in all luminous objects;  api —also;  tat —that;  jyotiḥ —source of light;  tamasaḥ —of the darkness;  param —beyond;  ucyate —is said;  jñānam —knowledge;  jñeyam —to be known;  jñāna-gamyam —to be approached by knowledge;  hṛdi —in the heart;  sarvasya —of everyone;  viṣṭhitam —situated.
TRANSLATION
He is the source of light in all luminous objects. He is beyond the darkness of matter and is unmanifested. He is knowledge, He is the object of knowledge, and He is the goal of knowledge. He is situated in everyone's heart.
PURPORT
The Supersoul, the Supreme Personality of Godhead, is the source of light in all luminous objects like the sun, moon, stars, etc. In the Vedic literature we find that in the spiritual kingdom there is no need of sun or moon because the effulgence of the Supreme Lord is there. In the material world that  brahmajyoti , the Lord's spiritual effulgence, is covered by the  mahat-tattva , the material elements; therefore in this material world we require the assistance of sun, moon, electricity, etc., for light. But in the spiritual world there is no need of such things. It is clearly stated in the Vedic literature that because of His luminous effulgence, everything is