'Sign' in the Bible

And he said unto him, If now I have found grace in thy sight, then shew me a sign that thou talkest with me.

Gideon said to God, "If you really intend to use me to deliver Israel, as you promised, then give me a sign as proof.

Gideon said to God, "Please do not get angry at me, when I ask for just one more sign. Please allow me one more test with the fleece. This time make only the fleece dry, while the ground around it is covered with dew."

Now there was an appointed sign between the men of Israel and the liers in wait, that they should make a great flame with smoke rise up out of the city.

Then the sign went up out of the town in the pillar of smoke, and the Benjamites, turning back, saw all the town going up in smoke to heaven.