अपरं तेज: आदित्यादिकं व्यावर्त्यते ।सर्वत्र यो देवः इतिविशेष्यते -- यो देवः परमं तेजः परमं तपः परमं ब्रह्म परमंपरायणम्, स एकः सर्वभूतानां परायणमिति वाक्यार्थः ॥प्रथमप्रश्नस्योत्तरमाह --
In plain words
The lesser light — the sun and everything of that kind — is ruled out here. Every time, the phrase "the Deva who" narrows it down: the Deva who is the supreme light, the supreme tapas, the supreme Brahman, the supreme refuge; he alone is the refuge of all beings. That is what the sentence says. Now he gives the answer to the first question —
Close to the Sanskrit
The other light, namely the sun and the rest, is excluded. Everywhere it is qualified by "who is the Deva" — the Deva who is the supreme light, the supreme tapas, the supreme Brahman, the supreme refuge, he alone is the refuge of all beings: this is the meaning of the sentence. He states the answer to the first question —