Revelation 20:3 in the King James Version
And cast him into the bottomless pit, and shut him up, and set a seal upon him, that he should deceive the nations no more, till the thousand years should be fulfilled: and after that he must be loosed a little season.
Context
2 He seized the dragon, the old serpent, who is the devil and Satan, who deceives the whole inhabited earth, and bound him for a thousand years,
3 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.
4 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.