KAṬHA UPANISHAD · 2.3.3

भयादस्याग्निस्तपति भयात्तपति सूर्यः ।
भयादिन्द्रश्च वायुश्च मृत्युर्धावति पञ्चमः ॥ ३॥

bhayādasyāgnistapati bhayāttapati sūryaḥ ।
bhayādindraśca vāyuśca mṛtyurdhāvati pañcamaḥ ॥ 3॥

For fear of Him the fire burneth, for fear of Him the sun giveth heat, for fear of Him Indra and Vayu and Death hasten in their courses.