John 12:38-41

38 This happened as Isaiah the prophet had said it would. He had said, "Lord, who has believed what we've been saying? Who has seen the Lord's saving power?" (Isaiah 53:1)

39 For this reason, they could not believe. As Isaiah says in another place,

40 "The Lord has blinded their eyes. He has closed their minds. So they can't see with their eyes. They can't understand with their minds. They can't turn to the Lord. If they could, he would heal them." (Isaiah 6:10)

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