Jesus was an authoritative figure. He had authority. He goes into the synagogue and in the midst of all the argy bargy and vigorous discussion, and men arguing amongst themselves, he spoke with real authority. And it was not what He said so much as the challenge he made. Like he had just called those commercial fisherman to come and follow Him, he challenges the people. Its like someone got up in parliament and stopped saying what the people wanted to hear, and gave it to them straight. No silk ties, no Armani suites, no rhetoric, and empty promises. Jesus told it as it was, and took no prisoners. No one could speak against him. In fact indications are that the people sat there in stunned silence. There was nothing much to say, Jesus was right.