"Yiras Hashem means, strictly, to see God everywhere and to feel your own littleness in His greatness.” (Horeb, Yirah)
“…contemplate the all-conquering omnipotence of God. Here, too, we learn that unshakable trust which enables us to withstand all the vicissitudes of life and even death itself, and which enables all those pervaded with the genuine fear of God to unlearn the fear of human power or natural force, and in its place to acquire the skill of passing calmly and serenely through all the trials that are part of daily living.” (Hirsch Siddur, Gevuros)