When fear threatens, from whatever source, may I know this not only intellectually, but with certainty in every fiber of my being.

1 The LORD is my light and my salvation—whom shall I fear? The LORD is the stronghold of my life—of whom shall I be afraid?
2 When the wicked advance against me to devour me, it is my enemies and my foes who will stumble and fall.
3 Though an army besiege me, my heart will not fear; though war break out against me,even then I will be confident.
4 One thing I ask from the LORD, this only do I seek: that I may dwell in the house of the LORD all the days of my life, to gaze on the beauty of the LORD and to seek him in his temple.
5 For in the day of trouble he will keep me safe in his dwelling; he will hide me in the shelter of his sacred tent and set me high upon a rock.
Psalm 27 (NIV)