And they came to him, and awoke him, saying, Master, master, we perish. Then he arose, and rebuked the wind and the raging of the water: and they ceased, and there was a calm.
Note 1 at Lu 8:24: Considering the fact that the boat was filled with water, it is amazing that the disciples had to awaken Jesus. This was not a large ship with cabins below deck but rather a small, open boat, and Jesus was, no doubt, "soaked to the bone." This reflects Jesus' humanity and how tired He must have been. This also shows that Jesus must have been in a very deep sleep. Medical science has discovered that the deeper the sleep we go into, the more rest our bodies get. This is a clue as to how Jesus could maintain the grueling pace He did with even an occasional all night spent in prayer (Mt 14:23, Mr 6:46, and Lu 6:12). He was receiving the maximum benefit from His sleep.
Note 2 at Lu 8:24: The dictionary defines "rebuke" as "to criticize or reprove sharply; reprimand." Jesus certainly wasn't rebuking the Father or something that the Father caused. This shows that although God does sometimes control the weather (1Sa 12:16-19, Job 37:11-13, Ps 107:25, and Jon 1:4), it is not always so. Satan can bring storms (Job 1:12 and 18-19), and storms can be caused by natural means.
We have the same authority over the weather that Jesus used here (Mt 28:18-20 and Joh 14:12), and many believers have seen similar things happen. However, wisdom should be used when we take authority over the weather. Paul never rebuked the storm he was caught in even though it was threatening the lives of many people (Ac 27). We must be led of the Lord. If we rebuke the rain so that we can have a picnic, we may be working against a million farmers who have been praying for rain (Jas 4:3).