'Sign' in the Bible

“Ask a sign for yourself from the Lord your God; make it deep as Sheol or high as heaven.”

Therefore the Lord Himself will give you a sign: Behold, a virgin will be with child and bear a son, and she will call His name Immanuel.

It will become a sign and a witness to the Lord of hosts in the land of Egypt; for they will cry to the Lord because of oppressors, and He will send them a Savior and a Champion, and He will deliver them.

And the Lord said, “Even as My servant Isaiah has gone naked and barefoot three years as a sign and token against Egypt and Cush,

“Then this shall be the sign for you: you will eat this year what grows of itself, in the second year what springs from the same, and in the third year sow, reap, plant vineyards and eat their fruit.

“This shall be the sign to you from the Lord, that the Lord will do this thing that He has spoken:

Then Hezekiah had said, “What is the sign that I shall go up to the house of the Lord?”

“Instead of the thorn bush the cypress will come up,And instead of the nettle the myrtle will come up,And it will be a memorial to the Lord,For an everlasting sign which will not be cut off.”

“Behind the door and the doorpostYou have set up your sign;Indeed, far removed from Me, you have uncovered yourself,And have gone up and made your bed wide.And you have made an agreement for yourself with them,You have loved their bed,You have looked on their manhood.

I will set a sign among them and will send survivors from them to the nations: Tarshish, Put, Lud, Meshech, Tubal and Javan, to the distant coastlands that have neither heard My fame nor seen My glory. And they will declare My glory among the nations.