John 2:18
Then answered the Jews and said unto him, What sign shewest thou unto us, seeing that thou doest these things?
John 6:30
They said therefore unto him, What sign shewest thou then, that we may see, and believe thee? what dost thou work?
Acts 28:11
And after three months we departed in a ship of Alexandria, which had wintered in the isle, whose sign was Castor and Pollux.
Romans 4:11
And he received the sign of circumcision, a seal of the righteousness of the faith which he had yet being uncircumcised: that he might be the father of all them that believe, though they be not circumcised; that righteousness might be imputed unto them also:
1 Corinthians 1:22
For the Jews require a sign, and the Greeks seek after wisdom:
1 Corinthians 14:22
Wherefore tongues are for a sign, not to them that believe, but to them that believe not: but prophesying serveth not for them that believe not, but for them which believe.
Revelation 15:1
And I saw another sign in heaven, great and marvellous, seven angels having the seven last plagues; for in them is filled up the wrath of God.