John 12:38-41

38This was to fulfill the word of Isaiah the prophet: “Lord, who has believed our message and to whom has the arm of the Lord been revealed?”

39For this reason they could not believe, because, as Isaiah says elsewhere:

40“He has blinded their eyes and hardened their hearts, so they can neither see with their eyes, nor understand with their hearts, nor turn—and I would heal them.”

41Isaiah said this because he saw Jesus’ glory and spoke about him.