What fears do you face? What circumstances make you feel vulnerable and weak?
To know the peace of God is to stand strong in the midst of trouble. To trust in the Lord is to have "peace that passes all understanding". When we run on me-strength, our supply runs short quickly. When you rely on the Almighty, threats like bankruptcy, death, suffering, sickness, ISIS, terror, etc, will not shake you.
When you place your life in the hands of the one Who holds the universe together, you will know true strength.
Read Psalm 27:1-14