Matthew 13:13-15

13This is the reason I speak to the crowds in parables: because while [having the power of] seeing they do not see, and while [having the power of] hearing they do not hear, nor do they understand and grasp [spiritual things].

14In them the prophecy of Isaiah is being fulfilled, which says, ‘You will hear and keep on hearing, but never understand; And you will look and keep on looking, but never comprehend;

15For this nation’s heart has grown hard, And with their ears they hardly hear, And they have [tightly] closed their eyes, Otherwise they would see with their eyes, And hear with their ears, And understand with their heart, and turn [to Me] And I would heal them [spiritually].’