‘Go to this people and say,
in hearing, you will hear,
    but will in no way understand.
In seeing, you will see,
    but will in no way perceive.
²⁷ For this people’s heart has grown callous.
    Their ears are dull of hearing.
    Their eyes they have closed.
Lest they should see with their eyes,
    hear with their ears,
    understand with their heart,
    and would turn again,
    then I would heal them.’Isaiah 6:9-10