Upanishads On Fearlessness

dvitãyàdvai bhayaü bhavati ||

"There is fear from duality." (Non-duality alone is fearless). (Brih. Up. 1. 4.2). ..

abayaü vai janaka pràpto.asãti hovàca yàj¤avalkyaþ ||

"Yajnavalkya said: O Janaka! You have attained the fearless (Brahman)." (Brih. Up. IV. 2..4).

abhayaü vai brahmàbhayaü hi vai brahma bhavati ya evaü veda ||

"Brahman is fearless; one who knows this, becomes the fearless Brahman." (Brih. Up. IV. 4. 25).

yato vàco nivata^^rnte apràpya manasà saha | 

ànandaü brahmaõo vidvàn na bibheti kuta÷cana ||

"Not reaching It, the speech and the mind return back. One who knows this Bliss of Brahman, fears not from anything at all." (Taitt. Up. II. 9)