John 12:34-38

The crowd then answered Him, “We have heard from the Law that the Christ is to remain forever; and how is it that You say, ‘The Son of Man must be lifted up’? Who is this Son of Man?”

So Jesus said to them, “For a little while longer the Light is among you. Walk while you have the Light, so that darkness will not overtake you; also, the one who walks in the darkness does not know where he is going.

While you have the Light, believe in the Light, so that you may become sons of Light.” These things Jesus proclaimed, and He went away and hid Himself from them.

But though He had performed so many signs in their sight, they still were not believing in Him.

This happened so that the word of Isaiah the prophet which he spoke would be fulfilled: “Lord, who has believed our report? And to whom has the arm of the Lord been revealed?”