When Jesus started to teach, He is speaking to a crowd of people that aren’t really tuned in to what He want’s to say, except if He directed them to form a line or something for healing. It was going to be hard for them to hear anything else. Have you ever been in a situation like that? I’ve spoken to groups before during banquets where the organizer would say to me, “We’re running a little behind so I’m just gonna have you get started while the waiters are passing out dessert.” And, you know, I don’t have a chance to communicate to these people while the chocolate mousse is being passed out and every one is trying it, and calling to the waiter for a clean spoon, or fresh coffee – they won’t hear a thing I say, their minds are on something else. Or in a school assembly when an administrator is trying to talk to all the kids who’ve been herded in there from recess, they may be looking at him, but their minds are all over the place, kids can walk out of there and have no idea what took place. So Jesus, instead of just teaching straightforward truth about the kingdom of God, changes His teaching style and used a form He hadn’t used till right now, he taught them using parables.