'Thousand' in the Bible

I heard the number of those who were sealed, one hundred forty-four thousand, sealed out of every tribe of the children of Israel:

of the tribe of Judah were sealed twelve thousand, of the tribe of Reuben twelve thousand, of the tribe of Gad twelve thousand,

of the tribe of Asher twelve thousand, of the tribe of Naphtali twelve thousand, of the tribe of Manasseh twelve thousand,

of the tribe of Simeon twelve thousand, of the tribe of Levi twelve thousand, of the tribe of Issachar twelve thousand,

of the tribe of Zebulun twelve thousand, of the tribe of Joseph twelve thousand, of the tribe of Benjamin were sealed twelve thousand.

I will give power to my two witnesses, and they will prophesy one thousand two hundred sixty days, clothed in sackcloth."

In that day there was a great earthquake, and a tenth of the city fell. Seven thousand people were killed in the earthquake, and the rest were terrified, and gave glory to the God of heaven.

The woman fled into the wilderness, where she has a place prepared by God, that there they may nourish her one thousand two hundred sixty days.

I saw, and behold, the Lamb standing on Mount Zion, and with him a number, one hundred forty-four thousand, having his name, and the name of his Father, written on their foreheads.

They sing a new song before the throne, and before the four living creatures and the elders. No one could learn the song except the one hundred forty-four thousand, those who had been redeemed out of the earth.

The winepress was trodden outside of the city, and blood came out from the winepress, even to the bridles of the horses, as far as one thousand six hundred stadia.

He seized the dragon, the old serpent, which is the devil and Satan, who deceives the whole inhabited earth, and bound him for a thousand years,

and cast him into the abyss, and shut it, and sealed it over him, that he should deceive the nations no more, until the thousand years were finished. After this, he must be freed for a short time.

I saw thrones, and they sat on them, and judgment was given to them. I saw the souls of those who had been beheaded for the testimony of Jesus, and for the word of God, and such as didn't worship the beast nor his image, and didn't receive the mark on their forehead and on their hand. They lived, and reigned with Christ for a thousand years.

The rest of the dead didn't live until the thousand years were finished. This is the first resurrection.

Blessed and holy is he who has part in the first resurrection. Over these, the second death has no power, but they will be priests of God and of Christ, and will reign with him one thousand years.

And after the thousand years, Satan will be released from his prison,

The city lies foursquare, and its length is as great as its breadth. He measured the city with the reed, Twelve thousand twelve stadia. Its length, breadth, and height are equal.