TSK · Matthew 13:14

He said,“Go and tell these people:‘Listen continually, but don’t understand! Look continually, but don’t perceive!’

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.”

For this reason they could not believe, because again Isaiah said,

as it is written,“God gave them a spirit of stupor, eyes that would not see and ears that would not hear, to this very day.”