John 12:39-41

Young's Literal Translation

³⁹ Because of this they were not able to believe, that again Isaiah said,

⁴⁰ `He hath blinded their eyes, and hardened their heart, that they might not see with the eyes, and understand with the heart, and turn back, and I might heal them;'

⁴¹ these things said Isaiah, when he saw his glory, and spake of him.