What the Bible says about Faith and Fear Cannot Co-exist
(From Forerunner Commentary)
Jesus rebukes His disciples for fearfulness and little faith. They have not lost complete confidence in Christ, but neither have they learned nor fully developed trust in Him. They are at ease only when they hear Him speak and see Him taking care of them. They have so little faith that, when the moment of need comes, it is not enough to give them peace and calm.
The disciples are not totally faithless in this incident, as they called for Christ to save them. They know from what they had seen of His supernatural power that He is able to calm the storm, but they fall short in failing to realize and fully believe that it makes no difference whether Christ is asleep or awake—He is still the Son of God. They should have considered that the Father would not allow His faithful Son to drown in a sinking boat. After all, He is the One who, ages before, had "shut in the sea with doors, . . . [and] said, 'This far you may come but no farther'" (Job 38:8, 11). His followers do not apply their little faith. Faith and fear cannot exist together, for fear paralyzes faith.
Martin G. Collins
The Miracles of Jesus Christ: Stilling a Storm