The day of the lord ends this creation
“But the day of the Lord will come as a thief in the night; in the which the heavens shall pass away with a great noise, and the elements shall melt with fervent heat, the earth also and the works that are therein shall be burned up.
Seeing then that all these things shall be dissolved, what manner of persons ought ye to be in all holy conversation and godliness, looking for and hasting unto the coming of the day of God, wherein the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat?
….Nevertheless we, according to his promise, look for new heavens and a new earth, wherein dwelleth righteousness.”
2 Peter 3:10-13
“For yourselves know perfectly that the day of the Lord so cometh as a thief in the night. For when they shall say, Peace and safety; then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape.”
1 Thessalonians 5:2-3 KJ
Do you notice how this is creating an image in our minds of the heaven and earth ending in a blaze of fire when the lord comes but promises a new world ?
He’s been saying that a very long time 700 years before jesus came to earth
“The earth also is defiled under the inhabitants thereof; because they have transgressed the laws, changed the ordinance, broken the everlasting covenant. Therefore hath the curse devoured the earth, and they that dwell therein are desolate:
…. The earth shall reel to and fro like a drunkard, and shall be removed like a cottage; and the transgression thereof shall be heavy upon it; and it shall fall, and not rise again. And it shall come to pass in that day, that the LORD shall punish the host of the high ones that are on high, and the kings of the earth upon the earth.”
Isaiah 24:5-6, 20-21 KJV
The day of the lord is a consistent theme referencing the second coming of Christ
“and to you who are troubled rest with us, when the Lord Jesus shall be revealed from heaven with his mighty angels, in flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ: who shall be punished with everlasting destruction from the presence of the Lord, and from the glory of his power;”
2 Thessalonians 1:7-9 KJV
That fire they are talking about comes when the lord returns from heaven to judge all people
“the Lord Jesus shall be revealed from heaven with his mighty angels, in flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ:”
“the day of the Lord will come as a thief in the night; in the which the heavens shall pass away with a great noise, and the elements shall melt with fervent heat, the earth also and the works that are therein shall be burned up.
The tribulation was about the desolation of Israel and the destruction of the city and temple in 70 ad we’re waiting for Jesus to return