In the LORD I take refuge; how can you say to my soul, "Flee like a bird to your mountain, for behold, the wicked bend the bow; they have fitted their arrow to the string to shoot in the dark at the upright in heart; if the foundations are destroyed, what can the righteous do?"
God is a refuge for those in trouble. He can securely protect them from their fear. The image of fear is invoked by the call to flight. The threat is strong and the picture of a bird flying away to the cover of mountain cedars is evocative of the desire to flee the fear. But the soul is safer at rest in God. Refuge is protection. God is the safe place.
The Lord is our refuge despite so many unknowns. The picture of the wicked as archers ready with nocked arrows to shoot unseen from the dark at the righteous is sobering. The devil likes to enlist ninja attackers. But God is stronger and safer than our knowledge of an unseen foe.
And Satan wants to get us with our weakest fears. If that is successful, then our foundations of faith in God start crumbling. And then we are in real trouble. That is why The Lord must stay our refuge. When we are "in Him" we are strongly secure. Otherwise arrows fly and foundations fail.