‘They said therefore to him, “What did he do to you? How did he open your eyes?” '
They decided to hear the story again so that they could pick holes in it, and even find cause against Jesus. They were getting exasperated. Surely the once blind man must see that Jesus was a Sabbath-breaker. But the man had been healed and to him that only meant one thing, and that was that God had been at work. So he had had enough and was disgusted at their hypocrisy.