This is found in Luke 4:31-37. We find here that Jesus taught in the synagogue and His teaching was "with power". Of course it was, it was the Lord speaking! I sometimes wish I had the opportunity to have heard great preachers, like Charles Spurgeon, or John Wesley, or Martin Luther, or the Apostle Paul, but to hear the Lord preach! Amazing! Then we find a possessed man and Jesus commands the demon out of the man. The people were amazed at the authority, and Jesus fame rang throughout the country.
The power of Jesus is unparallelled. He is Omnipotent, all-powerful, and He can do anything. The demons shudder at His power, Satan trembles at His authority, and we also are saved because of His power over death! We must always realize that Jesus is bigger, stronger and more powerful than any foe. On that Sabbath day Jesus showed who He was by His power, authenticating His message as well as healing a man. Praise God for His power!