Faith Opposite of Fear
Fear, opposite of faith, is a tool of the adversary to open a doorway to allow negativity to influence or control us.
And it came to pass that Moses began to fear exceedingly; and he began to fear, he saw the bitterness of hell. Nevertheless, calling upon God, he received strength, and he commanded, saying: Depart from me, Satan, for this one God only will I worship, which is the God of glory. Moses 1:20
For the thing which I greatly feared is come upon me, and that which I was afraid of is come unto me. Job 3:25