Katha Upanishad Verse 2.3.2

All life and movement in the cosmos are driven by the power of Brahman, described here as Prana or a “mighty terror” (the uplifted thunderbolt). Those who recognize this supreme governing principles become immortal.

Sanskrit Verse

यदिदं किंच जगत्सर्वं प्राण एजति निःसृतम् ।
महद्भयं वज्रमुद्यतं य एतद्विदुरमृतास्ते भवन्ति ॥ २ ॥

Transliteration

yadidaṃ kiṃca jagatsarvaṃ prāṇa ejati niḥsṛtam |
mahadbhayaṃ vajramudyataṃ ya etadviduramṛtāste bhavanti || 2 ||

Translation

All this universe evolved (from prana) moves while Prana is; a mighty terror, the thunderbolt uplifted; those who know this become immortal.