स वा एष महानज आत्माजरोऽमरो- ऽमृतोऽभयो ब्रह्माभयं वै ब्रह्माभयँ हि वै ब्रह्म भवति य एवं वेद ॥ २५ ॥
In plain words
This vast, unborn Self is who you are — untouched by age, unable to die, deathless by nature, without fear. This is Brahman. Brahman is fearlessness itself. And whoever knows this becomes, in truth, that very fearlessness.
Close to the Sanskrit
He, verily, is this great, unborn Self, undecaying, undying, immortal, fearless — Brahman. Brahman is fearless indeed. Truly, he who knows this thus becomes the fearless Brahman itself.