John 12:38-41
This 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?”12:38 Isaiah 53:1
For this reason they could not believe, because, as Isaiah says elsewhere:
“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.”12:40 Isaiah 6:10
Isaiah said this because he saw Jesus’ glory and spoke about him.