Jesus consistently demonstrated His authority by doing things which were totally beyond human capacity. In this case, while the disciples were crossing the Sea of Galilee by boat, Jesus fell asleep on a cushion. A great storm arose, and the disciples panicked. 

In desperation, they awoke Jesus saying: "Teacher, do you not care that we are perishing?" He got up and calmly rebuked the wind and the sea. The storm ceased. He then turned to the disciples and reproved them for their lack of faith. Though they had seen Jesus perform many miracles, they were always amazed by each new one. They said: "Who then is this, that even the wind and the sea obey Him?" 

Note -- Let me ask you, How well do you sleep? Considering the things that the disciples had already seen Jesus do, their doubts about His ability to quiet the storm are astonishing. They had seen Him heal multitudes of people, cast out demons and prove Himself equal to any task at hand. Suddenly, they despaired because of a storm on the sea. Obviously, they didn't really think Jesus could solve this problem because they were amazed when He did. How could they have been so slow and so distrustful? What about us? Do we not believe that Jesus can handle any situation, if we trust and obey His will? Have we not seen in the Scriptures how Jesus can solve every problem? How do we react when we confront a fresh crisis in our lives--do we trustingly and confidently turn to Jesus, or do we throw up our hands in despair? How well do we sleep?