Require Good Listening. Even if it is Jesus Christ doing the speaking. To communicate a message there must be a sender and a receiver. If the message is sent and no one receives it, the message has not been communicated. Of course no one can receive if it isn't sent.
Communication requires active involvement by both the sender and the receiver.
Sender and receiver must cooperate in the give and take of the discourse. Jesus often had trouble with those who were to receive his words. Even because ye cannot hear my word . . . Jesus was unable to do the job by himself. We can't blame it all on preaching, will it do to blame your boredom on the preacher.