Mark 4:40 in the King James Version
And he said unto them, Why are ye so fearful? how is it that ye have no faith?
Context
39 He awoke and rebuked the wind, and said to the sea, “Peace! Be still!” The wind ceased and there was a great calm.
40 He said to them, “Why are you so afraid? How is it that you have no faith?”
41 They were greatly afraid and said to one another, “Who then is this, that even the wind and the sea obey him?”