They do not know nor understand; For He has shut their eyes, so that they cannot see, And their hearts, so that they cannot understand.
Isaiah 44:18
Surrounding context
44:17 And the rest of it he makes into a god, His carved image. He falls down before it and worships it, Prays to it and says, "Deliver me, for you are my god!"
44:18 They do not know nor understand; For He has shut their eyes, so that they cannot see, And their hearts, so that they cannot understand.
44:19 And no one considers in his heart, Nor is there knowledge nor understanding to say, "I have burned half of it in the fire, Yes, I have also baked bread on its coals; I have roasted meat and eaten it; And shall I make the rest of it an abomination? Shall I fall down before a block of wood?"