Most people are interested in other people rather than abstract ideas.
The thrust of His preaching was not exposition at all, but stories about people - parables. I have no doubt that Jesus, as a Master-storyteller, used an approach something very near to street theater, with a great deal of humor . LoveNotes uses Jesus' communication method. When Christ became flesh and dwelt among us, He made abstract truth visible. We can't see God's balance of mercy and judgement.