We've all set in worship services when we don't have a clue what the Pastor is talking about in his sermon. Or we've been in a Bible Class when people start to argue over something said in the class. I personally prefer to avoid bad sermons (although I'm sure I've delivered some) and confusing Bible Classes.
The people who went to Jewish Synagogues in Jesus' time were used to their teachers quoting famous Rabbis and arguing over minute details. Jesus did not do that. He taught clearly so people could understand and with the power and authority to change lives.
Jesus' word are still clear, powerful and life changing. That is why it is so important that we read God's Word, let it speak to us, and repeat God's message to others in words they can understand so that He can change their lives, too.