Why does Jesus not want people to repent and be forgiven in Mark 4?

This is in response to the disciples asking why Jesus teaches in parables: > He said to them, "The secret of the kingdom of God has been given to you. But to those outside, everything is in parables, so that although they look they may look but not see, and although they hear they may hear but not understand, so they may not repent and be forgiven." -Mark 4:11-12 New English Translation Why does he say this? Why is he teaching at all if his intent is actually that the people not see, not understand, and not repent. It seems troubling.