'Sign' in the Bible

The Jews therefore answered and said to him, What sign shewest thou to us, that thou doest these things?

This second sign again did Jesus, being come out of Judaea into Galilee.

The men therefore, having seen the sign which Jesus had done, said, This is truly the prophet which is coming into the world.

They said therefore to him, What sign then doest thou that we may see and believe thee? what dost thou work?

And many came to him, and said, John did no sign; but all things which John said of this man were true.

Therefore also the crowd met him because they had heard that he had done this sign.

Simon Peter makes a sign therefore to him to ask who it might be of whom he spoke.