'Sign' in the Bible

So the Jews answered and said to him, "What sign do you show to us, because you are doing these [things]?"

Now this [is] again a second sign Jesus performed [when he] came from Judea into Galilee.

Now [when] the people saw the sign that he performed, they began to say, "This one is truly the Prophet who is to come into the world!"

So they said to him, "Then what sign will you perform, so that we can see [it] and believe you? What will you do?

And many came to him and began to say, "John performed no sign, but everything John said about this man was true!"

Because of this also the crowd went to meet him, for they had heard [that] he had performed this sign.