John 12:38-41

38 it was that the word spoken by the prophet Isaiah might be fulfilled: "Lord, who has believed our report, and to whom has the arm of the Lord been revealed?"
39 Therefore they could not believe. For Isaiah again said,
40 "He has blinded their eyes and hardened their heart, lest they should see with their eyes and perceive with their heart, and turn for me to heal them."
41 Isaiah said this because he saw his glory and spoke of him.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.