Jesus performed many miracles to show others that he was a messenger of God. He was God's son. God gave Jesus power over nature, power over disease, and even power over death.
Power Over Nature
Jesus and his disciples were crossing the Sea of Galilee in a small boat one evening. While Jesus was sleeping, a fierce storm came, and began to sink the boat. The disciples woke him.
Jesus arose and rebuked the storm saying, "Peace be still." It became calm, and Jesus said to them "Where is your faith?" Because of this the disciples were afraid, saying "Who is this, that even the wind and sea obey him?" (Mark 4:35-41)
Power Over Disease
One day a crowd was following Jesus on a road near Jericho. Hearing the crowd, a blind beggar asked what was happening. They told him Jesus was passing by. The blind man cried out "Jesus, have mercy on me!"
Jesus stopped, and asked what he wanted. "Lord, I want to regain my sight," he replied. Jesus said, "Receive your sight; your faith has made you well." Immediately the man could see, and the crowd began glorifying God. (Mark 10:46-52)
Power Over Death
Jesus had a friend named Lazarus, who lived in Bethany with his sisters, Mary and Martha. When Jesus learned that Lazarus died, he came to Bethany.
Now Lazarus had been dead for 4 days, and a boulder covered the cave where his body was. Jesus asked them to remove the stone. He then shouted "Lazarus, come forth!" And Lazarus came out, restored to life.
After seeing this, many witnesses believed that Jesus was the son of God. (John 11:1-45)