Isaiah 7:11

Make a request to the Lord your God for a sign, a sign in the deep places of the underworld, or in the high heavens.

Isaiah 37:30

And this will be the sign to you: you will get your food this year from what comes up of itself, and in the second year from the produce of the same; and in the third year you will put in your seed, and get in the grain, and make vine-gardens, and take of their fruit.

Isaiah 38:7-8

And Isaiah said, This is the sign the Lord will give you, that he will do what he has said:

Judges 6:36-40

Then Gideon said to God, If you are going to give Israel salvation by my hand, as you have said,

2 Kings 19:29

And this will be the sign to you: you will get your food this year from what comes up of itself; and in the second year from the produce of the same; and in the third year you will put in your seed and get in the grain and make vine-gardens and take of their fruit.

2 Kings 20:8-11

And Hezekiah said to Isaiah, What is to be the sign that the Lord will make me well, and that I will go up to the house of the Lord on the third day?

Isaiah 38:22

And Hezekiah said, What is the sign that I will go up to the house of the Lord?

Jeremiah 19:1

This is what the Lord has said: Go and get for money a potter's bottle made of earth, and take with you some of the responsible men of the people and of the priests;

Jeremiah 19:10

Then let the potter's bottle be broken before the eyes of the men who have gone with you,

Jeremiah 51:63-64

And it will be that, when you have come to an end of reading this book, you are to have a stone fixed to it, and have it dropped into the Euphrates:

Matthew 12:38-40

Then some of the scribes and Pharisees, hearing this, said to him, Master, we are looking for a sign from you.

Matthew 16:1-4

And the Pharisees and Sadducees came and, testing him, made a request to him to give them a sign from heaven.

Treasury of Scripture Knowledge

Summary

Ask thee a sign of the LORD thy God; ask it either in the depth, or in the height above.

Bible References

General references

Genesis 15:8
And he said, O Lord God, how may I be certain that it will be mine?
1 Kings 13:3
The same day he gave them a sign, saying, This is the sign which the Lord has given: See, the altar will be broken and the burned waste on it overturned.
Isaiah 38:7
And Isaiah said, This is the sign the Lord will give you, that he will do what he has said:

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain