The day of the Lord is the day of the second coming of Christ. Nowhere does scripture teach that the day of the Lord lasts a long time or 1,000 years.
It (the "day of the Lord" being 1000 years long) is right in the textual context of Peter's 2nd Epistle, please consider:
2Pe_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.
2Pe_3:10 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 word "day", whether in Hebrew, or koine Greek, or even English has a range of definition / use, and can mean anything from,
a natural 24hr day (ie. "There are seven days in a week."; or "... And the evening and the morning were the first day."; Gen. 1:5;p KJB),
to the daylight time (when the sun is present in the sky; ie. "I looked outside and it was day, as opposed to night."; "Jesus answered, Are there not twelve hours in the day? If any man walk in the day, he stumbleth not, because he seeth the light of this world."; Jhn. 11:9 KJB),
to a period of time (short or long; "Man, it's been some time, I haven't seen or heard from you in a day."; "Turn from him, that he may rest, till he shall accomplish, as an hireling, his day."; Job 14:6 KJB).
Peter is drawing from Psa. 84:10, 90:4 for his statement:
Psa 84:10 For a day in thy courts is better than a thousand. I had rather be a doorkeeper in the house of my God, than to dwell in the tents of wickedness.
Psa 90:4 For a thousand years in thy sight are but as yesterday when it is past, and as a watch in the night.
In Psa. 90, "days" are paralleled with "years", as it is in many places of scripture (*):
Psa 90:9 For all our days are passed away in thy wrath: we spend our years as a tale that is told.
(*) -
Frank W Hardy - Day For A Year Parallels : Free Download, Borrow, and Streaming : Internet Archive
(*) -
Secrets Unsealed Stephen Bohr 20 Reasons To Apply The Day For A Year In Bible Prophecy : Free Download, Borrow, and Streaming : Internet Archive
The OT uses the phrase like this over and over again, as for instance:
Isa_34:8 For it is the day of the LORD'S vengeance, and the year of recompences for the controversy of Zion.
Isa 34:10 It shall not be quenched night nor day; the smoke thereof shall go up for ever: from generation to generation it shall lie waste; none shall pass through it for ever and ever.
Eze 30:3 For the day is near, even the day of the LORD is near, a cloudy day; it shall be the time of the heathen.
See Zep. 1 (whole chapter), "day of the LORD", "in the day", "in that day", "at that time", &c. in which many events and time passes.
Again in Eze. 38; & Zec. 14:1-4; see the phrases as they are used in Revelation 20, and thus "in that day", associated with "in the latter days" (plural), and "the day of the LORD", and a period of "time":
Eze 38:14 Therefore, son of man, prophesy and say unto Gog, Thus saith the Lord GOD; In that day when my people of Israel dwelleth safely, shalt thou not know it?
Eze 38:16 And thou shalt come up against my people of Israel, as a cloud to cover the land; it shall be in the latter days, and I will bring thee against my land, that the heathen may know me, when I shall be sanctified in thee, O Gog, before their eyes.
Eze 38:18 And it shall come to pass at the same time when Gog shall come against the land of Israel, saith the Lord GOD, that my fury shall come up in my face.
Eze 38:22 And I will plead against him with pestilence and with blood; and I will rain upon him, and upon his bands, and upon the many people that are with him, an overflowing rain, and great hailstones, fire, and brimstone.
Zec 14:1 Behold, the day of the LORD cometh, and thy spoil shall be divided in the midst of thee.
Zec 14:2 For I will gather all nations against Jerusalem to battle; and the city shall be taken, and the houses rifled, and the women ravished; and half of the city shall go forth into captivity, and the residue of the people shall not be cut off from the city.
Zec 14:4 And his feet shall stand in that day upon the mount of Olives, which is before Jerusalem on the east, and the mount of Olives shall cleave in the midst thereof toward the east and toward the west, and there shall be a very great valley; and half of the mountain shall remove toward the north, and half of it toward the south.
Rev 20:7 And when the thousand years are expired, Satan shall be loosed out of his prison,
Rev 20:8 And shall go out to deceive the nations which are in the four quarters of the earth, Gog and Magog, to gather them together to battle: the number of whom is as the sand of the sea.
Rev 20:9 And they went up on the breadth of the earth, and compassed the camp of the saints about, and the beloved city: and fire came down from God out of heaven, and devoured them.
Paul clearly taught that the day will bring "sudden destruction" upon unbelievers from which "they shall not escape" (1 Thessalonians 5:2-3).
I already agree that the living (physically) wicked / lost will be suddenly destroyed at the 2nd Advent / Coming. That is not in question, and I cited it several times. That is only the first phase, which begins the 1000 years. It is after the 1000 years, that all of the wicked / lost whom have ever lived (physically), from the time of Cain will be resurrected, and have the exection of punishment permanently upon them.
1Th 5:2 For yourselves know perfectly that the day of the Lord so cometh as a thief in the night.
1Th 5:3 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.
Thus at the beginning of the "day of the LORD", or the beginning of the 1000 years, the living (physically) wicked / lost on earth, at Jesus' 2nd Advent / Coming will indeed be taken unawares just as the flood of Noah came in a day, but lasted a loooong time (a little over a year), in type, to its counter-part. This is why the earth will be utterly devastated at that time, unto the ending of the 1000 years when all of the lost will be resurrected (Rev. 1:5a,7-10, &c). Just as the living (physically) lost in Noah's day were destroyed over time, so too, in the counterpart. For some persons in Noah's day it took weeks to months to perish, and yet it is a "day" of the LORD, or "day" of the LORD's vengeance. It simply means a period of time. It is the time of the LORD's justice. Just like the phrase, in Hebrews 4, "Heb 4:7 Again, he
limiteth a certain day, saying in David,
To day, after
so long a time; as it is said,
To day if ye will hear his voice, harden not your hearts." in other words, the "to day" is not merely 24hrs, but a length of time of God's grace being offered from the time of Jesus Christ even until now, the last 2000 years (see Ecc. 6:6, "a thousand years twice").
In Noah's day, the LORD came down (Gen. 7:16 KJB), then arose up high above the land (in type), among the waters and clouds, with all of the saints in the 'ark' (Gen. 7:20 KJB), and stayed there a long time (Gen. 8:13 KJB), and then after a long time, came back down to earth (Gen. 8:4 KJB), and settled, with all of the wicked destroyed, and they inheriting the 'new' (reshaped by the flood) earth (Gen. 8:17 & Gen. 9 KJB). Type and anti-type. It begins in a 24hr period, yes, but takes a lot longer time, months, even over a year in Noah's day. So too, in the greater "day of the LORD", when the LORD descends, to bring up the saints, into the clouds, and keep them in the greater 'Ark' (New Jerusalem), shutting them inward, and remain there for some time (1000 years), and then come back down to finalize events, wherein all of the wicked / lost whom have ever lived (physically) will be resurected to have executive justice upon them and then they are washed away by a sea / lake of fire, in counterpart to Noah's day, and eventually the saints go out and inherit a world made new.
... to be continued ...