Jonah 3:5

Then the people of Nineveh believed in God; and they called a fast and put on sackcloth from the greatest to the least of them.

Luke 11:32

The men of Nineveh will stand up with this generation at the judgment and condemn it, because they repented at the preaching of Jonah; and behold, something greater than Jonah is here.

2 Chronicles 20:3

Jehoshaphat was afraid and turned his attention to seek the Lord, and proclaimed a fast throughout all Judah.

Daniel 9:3

So I gave my attention to the Lord God to seek Him by prayer and supplications, with fasting, sackcloth and ashes.

Joel 1:14

Consecrate a fast,
Proclaim a solemn assembly;
Gather the elders
And all the inhabitants of the land
To the house of the Lord your God,
And cry out to the Lord.

Joel 2:12-17

“Yet even now,” declares the Lord,
Return to Me with all your heart,
And with fasting, weeping and mourning;

Matthew 12:41

The men of Nineveh will stand up with this generation at the judgment, and will condemn it because they repented at the preaching of Jonah; and behold, something greater than Jonah is here.

Exodus 9:18-21

Behold, about this time tomorrow, I will send a very heavy hail, such as has not been seen in Egypt from the day it was founded until now.

Ezra 8:21

Then I proclaimed a fast there at the river of Ahava, that we might humble ourselves before our God to seek from Him a safe journey for us, our little ones, and all our possessions.

Jeremiah 31:34

They will not teach again, each man his neighbor and each man his brother, saying, ‘Know the Lord,’ for they will all know Me, from the least of them to the greatest of them,” declares the Lord, “for I will forgive their iniquity, and their sin I will remember no more.”

Jeremiah 36:9

Now in the fifth year of Jehoiakim the son of Josiah, king of Judah, in the ninth month, all the people in Jerusalem and all the people who came from the cities of Judah to Jerusalem proclaimed a fast before the Lord.

Jeremiah 42:1

Then all the commanders of the forces, Johanan the son of Kareah, Jezaniah the son of Hoshaiah, and all the people both small and great approached

Jeremiah 42:8

Then he called for Johanan the son of Kareah and all the commanders of the forces that were with him, and for all the people both small and great,

Acts 8:10

and they all, from smallest to greatest, were giving attention to him, saying, “This man is what is called the Great Power of God.”

Acts 27:25

Therefore, keep up your courage, men, for I believe God that it will turn out exactly as I have been told.

Hebrews 11:1

Now faith is the assurance of things hoped for, the conviction of things not seen.

Hebrews 11:7

By faith Noah, being warned by God about things not yet seen, in reverence prepared an ark for the salvation of his household, by which he condemned the world, and became an heir of the righteousness which is according to faith.

Treasury of Scripture Knowledge

Summary

So the people of Nineveh believed God, and proclaimed a fast, and put on sackcloth, from the greatest of them even to the least of them.

General references

Bible References

Believed

Exodus 9:18
Behold, about this time tomorrow, I will send a very heavy hail, such as has not been seen in Egypt from the day it was founded until now.
Matthew 12:41
The men of Nineveh will stand up with this generation at the judgment, and will condemn it because they repented at the preaching of Jonah; and behold, something greater than Jonah is here.
Luke 11:32
The men of Nineveh will stand up with this generation at the judgment and condemn it, because they repented at the preaching of Jonah; and behold, something greater than Jonah is here.
Acts 27:25
Therefore, keep up your courage, men, for I believe God that it will turn out exactly as I have been told.
Hebrews 11:1
Now faith is the assurance of things hoped for, the conviction of things not seen.

And proclaimed

2 Chronicles 20:3
Jehoshaphat was afraid and turned his attention to seek the Lord, and proclaimed a fast throughout all Judah.
Ezra 8:21
Then I proclaimed a fast there at the river of Ahava, that we might humble ourselves before our God to seek from Him a safe journey for us, our little ones, and all our possessions.
Jeremiah 36:9
Now in the fifth year of Jehoiakim the son of Josiah, king of Judah, in the ninth month, all the people in Jerusalem and all the people who came from the cities of Judah to Jerusalem proclaimed a fast before the Lord.
Joel 1:14
Consecrate a fast,
Proclaim a solemn assembly;
Gather the elders
And all the inhabitants of the land
To the house of the Lord your God,
And cry out to the Lord.
Joel 2:12
“Yet even now,” declares the Lord,
Return to Me with all your heart,
And with fasting, weeping and mourning;

From

Jeremiah 31:34
They will not teach again, each man his neighbor and each man his brother, saying, ‘Know the Lord,’ for they will all know Me, from the least of them to the greatest of them,” declares the Lord, “for I will forgive their iniquity, and their sin I will remember no more.”
Jeremiah 42:1
Then all the commanders of the forces, Johanan the son of Kareah, Jezaniah the son of Hoshaiah, and all the people both small and great approached
Acts 8:10
and they all, from smallest to greatest, were giving attention to him, saying, “This man is what is called the Great Power of God.”

General references

Genesis 37:34
So Jacob tore his clothes, and put sackcloth on his loins and mourned for his son many days.
Exodus 9:20
The one among the servants of Pharaoh who feared the word of the Lord made his servants and his livestock flee into the houses;