If that is so, then I don't think you know how to understand what the "promise" was/is in verse 9, in conjunction with verse 8, in 2 Peter 3[8] But, beloved, be not ignorant of this one thing, that one day is with the Lord as a thousand years, and a thousand years as one day.
[9] The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance.
[10] 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.
The Day of the Lord
14 Behold, the day of the Lord is coming,
And your spoil will be divided in your midst.
2 For I will gather all the nations to battle against Jerusalem;
The city shall be taken,
The houses rifled,
And the women ravished.
Half of the city shall go into captivity,
But the remnant of the people shall not be cut off from the city.
3 Then the Lord will go forth
And fight against those nations,
As He fights in the day of battle.
4 And in that day His feet will stand on the Mount of Olives,
Which faces Jerusalem on the east.
And the Mount of Olives shall be split in two,
From east to west,
Making a very large valley;
Half of the mountain shall move toward the north
And half of it toward the south.
5 Then you shall flee
through My mountain valley,
For the mountain valley shall reach to Azal.
Yes, you shall flee
As you fled from the earthquake
In the days of Uzziah king of Judah.
Thus the Lord my God will come,
And all the saints with You.
6 It shall come to pass in that day
That there will be no light;
The lights will diminish.
7 It shall be one day
Which is known to the Lord—
Neither day nor night.
But at evening time it shall happen
That it will be light.
8 And in that day it shall be
That living waters shall flow from Jerusalem,
Half of them toward the eastern sea
And half of them toward the western sea;
In both summer and winter it shall occur.
9 And the Lord shall be King over all the earth.
In that day it shall be—
“The Lord
is one,”
And His name one.