John 2:18

Then the Jews responded and said to him, "What sign can you show to us, that you may do these things?

Other versions

Then answered the Jews and said unto him, What sign shewest thou unto us, seeing that thou doest these things?

So the Jews said to him, "What sign do you show us for doing these things?"

Then the Jews demanded of him, "What miraculous sign can you show us to prove your authority to do all this?"