Judges 6:17

17And he said to him, aIf now I have found favor in your eyes, then bshow me a sign that it is you who speak with me.

Judges 6:37-40

37behold, I am laying a fleece of wool on the threshing floor. If there is dew on the fleece alone, and it is dry on all the ground, then I shall know that you will save Israel by my hand, as you have said.” 38And it was so. When he rose early next morning and squeezed the fleece, he wrung enough dew from the fleece to fill a bowl with water. 39Then Gideon said to God, c“Let not your anger burn against me; let me speak just once more. Please let me test just once more with the fleece. Please let it be dry on the fleece only, and on all the ground let there be dew.” 40And God did so that night; and it was dry on the fleece only, and on all the ground there was dew.

2 Kings 19:29

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

2 Kings 20:5

5“Turn back, and say to Hezekiah ethe leader of my people, Thus says the Lord, the God of David your father: fI have heard your prayer; gI have seen your tears. Behold, I will heal you. On the third day you shall go up to the house of the Lord,

Isaiah 7:11

11Ask ha sign of the Lord your
The Hebrew for you and  your is singular in verses 11, 16, 17
God; let it be deep as Sheol or high as heaven.”

Isaiah 7:14

14Therefore the jLord himself will give you a sign. kBehold, the lvirgin shall conceive and bear a son, and shall call his name mImmanuel.
 Immanuel means God is with us

Isaiah 38:22

22Hezekiah also had said, “What is the sign that I shall go up to the house of the Lord?”

Hosea 6:2

2After two days ohe will revive us;
on the third day he will raise us up,
that we may live before him.
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