so that the word of the prophet Isaiah might be fulfilled: “Lord, who has believed our message? To whom has the arm of the Lord been revealed?”
In context
36While you have the light, believe in the light, so that you may become children of light.” Jesus said this, and then he went away and hid from them. 37Though he had performed so many signs before their eyes, they did not believe in him, 38so that the word of the prophet Isaiah might be fulfilled: “Lord, who has believed our message? To whom has the arm of the Lord been revealed?” 39This is why they could not believe, for Isaiah also said: 40“He has blinded their eyes and hardened their heart, so that they might not see with their eyes or understand with their heart, and turn — and I would heal them.”