Why Are You Teaching in Parables?

Jesus says he teaches in parables so that people won't understand him. He quotes a passage out of isaiah six, and reads it to us from the septuagen. If you aren't willing to prepare your soil, then it's really easy to have ears that cannot hear, or eyes that cannot see. What about hoseah ten? What verse do you have out of hoseah ten here? And read it to us.