12 To those who listen to my teaching, more understanding will be given, and they will have an abundance of knowledge. But for those who are not listening, even what little understanding they have will be taken away from them.
13 That is why I use these parables, For they look, but they don’t really see. They hear, but they don’t really listen or understand.
14 This fulfills the prophecy of Isaiah that says, ‘When you hear what I say, you will not understand. When you see what I do, you will not comprehend.
15 For the hearts of these people are hardened, and their ears cannot hear, and they have closed their eyes— so their eyes cannot see, and their ears cannot hear, and their hearts cannot understand, and they cannot turn to me and let me heal them.’
Why Jesus tell parable me: because they have a hard heart, if he tells like it is they will not want to hear or understand, but if he tell in a form of story they are more open to understand and believe