Isaiah 1:3

1:3 An ox recognizes its owner,

a donkey recognizes where its owner puts its food;

but Israel does not recognize me,

my people do not understand.”

Isaiah 6:9

6:9 He said, “Go and tell these people:

‘Listen continually, but don’t understand!

Look continually, but don’t perceive!’

Isaiah 33:19

33:19 You will no longer see a defiant people

whose language you do not comprehend,

whose derisive speech you do not understand.