There are some wonderful details of the inbound millennial kingdom listed in Isaiah 11, and the first part talks about our ruler Jesus Christ, who finally claims his throne to rule the world while being with His people here on earth.
Isaiah 11:1–5
The Righteous Reign of the Branch
[1] There shall come forth a shoot from the stump of Jesse, and a branch from his roots shall bear fruit. [2] And the Spirit of the LORD shall rest upon him, the Spirit of wisdom and understanding, the Spirit of counsel and might, the Spirit of knowledge and the fear of the LORD. [3] And his delight shall be in the fear of the LORD. He shall not judge by what his eyes see, or decide disputes by what his ears hear, [4] but with righteousness he shall judge the poor, and decide with equity for the meek of the earth; and he shall strike the earth with the rod of his mouth, and with the breath of his lips he shall kill the wicked. [5] Righteousness shall be the belt of his waist, and faithfulness the belt of his loins. (ESV)
The interesting part is even though some of humanity will make it out of the tribulation alive, they’ll still have their sin nature, with the human heart leading them into sin and trying to exploit others for their own personal gain among other grievous sins. But Christ will rule with complete understanding and in righteousness strike down the wicked with the breath of his mouth. The world won’t be defined by wickedness and corruption like it is today. And the world will be filled with the knowledge of God as he rules from Jerusalem. This also points to some of the descendants of those who enter the millennial kingdom not being saved or indwelt by the Holy Spirit, even though Christ rules a righteous and just world full of His blessings.
Isaiah 11:9
[9] They shall not hurt or destroy in all my holy mountain; for the earth shall be full of the knowledge of the LORD as the waters cover the sea. (ESV)
And one of the most interesting aspects is that the curse of creation will be lifted.
Isaiah 11:6–9
[6] The wolf shall dwell with the lamb, and the leopard shall lie down with the young goat, and the calf and the lion and the fattened calf together; and a little child shall lead them. [7] The cow and the bear shall graze; their young shall lie down together; and the lion shall eat straw like the ox. [8] The nursing child shall play over the hole of the cobra, and the weaned child shall put his hand on the adder’s den. [9] They shall not hurt or destroy in all my holy mountain; for the earth shall be full of the knowledge of the LORD as the waters cover the sea. (ESV)
The natural order of animals will change from predators becoming herbivores no longer threatening humanity, with even the poisonous animals changed to not endanger a child who picks them up. And for the faithful nations God will bring rain in its season, and the ground will yield crops abundantly with even the animals producing offspring abundantly while the long lifespans of Genesis make a return. And with the fallen angels locked up and no longer influencing the earth, the darkness in the heart of man is still not done, as at the end when the fallen angels are released, much of the earth will rebel against God in the final rebellion to be wiped out by fire from heaven.
Revelation 20:7–10
The Defeat of Satan
[7] And when the thousand years are ended, Satan will be released from his prison [8] and will come out to deceive the nations that are at the four corners of the earth, Gog and Magog, to gather them for battle; their number is like the sand of the sea. [9] And they marched up over the broad plain of the earth and surrounded the camp of the saints and the beloved city, but fire came down from heaven and consumed them, [10] and the devil who had deceived them was thrown into the lake of fire and sulfur where the beast and the false prophet were, and they will be tormented day and night forever and ever. (ESV)
It makes me wonder if there will be a second Rapture of believers at the end of the millennial kingdom, with the rebels left while the universe is destroyed in a giant fiery implosion as Peter said.
2 Peter 3:7
[7] But by the same word the heavens and earth that now exist are stored up for fire, being kept until the day of judgment and destruction of the ungodly. (ESV)
Revelation 21:1–4
The New Heaven and the New Earth
[1] Then I saw a new heaven and a new earth, for the first heaven and the first earth had passed away, and the sea was no more. [2] And I saw the holy city, new Jerusalem, coming down out of heaven from God, prepared as a bride adorned for her husband. [3] And I heard a loud voice from the throne saying, “Behold, the dwelling place of God is with man. He will dwell with them, and they will be his people, and God himself will be with them as their God. [4] He will wipe away every tear from their eyes, and death shall be no more, neither shall there be mourning, nor crying, nor pain anymore, for the former things have passed away.” (ESV)
For the size of the New Jerusalem and an interesting look at the end of Revelation, see this post.
Isaiah 11
The Righteous Reign of the Branch
[1] There shall come forth a shoot from the stump of Jesse,
and a branch from his roots shall bear fruit.
[2] And the Spirit of the LORD shall rest upon him,
the Spirit of wisdom and understanding,
the Spirit of counsel and might,
the Spirit of knowledge and the fear of the LORD.
[3] And his delight shall be in the fear of the LORD.
He shall not judge by what his eyes see,
or decide disputes by what his ears hear,
[4] but with righteousness he shall judge the poor,
and decide with equity for the meek of the earth;
and he shall strike the earth with the rod of his mouth,
and with the breath of his lips he shall kill the wicked.
[5] Righteousness shall be the belt of his waist,
and faithfulness the belt of his loins.
[6] The wolf shall dwell with the lamb,
and the leopard shall lie down with the young goat,
and the calf and the lion and the fattened calf together;
and a little child shall lead them.
[7] The cow and the bear shall graze;
their young shall lie down together;
and the lion shall eat straw like the ox.
[8] The nursing child shall play over the hole of the cobra,
and the weaned child shall put his hand on the adder’s den.
[9] They shall not hurt or destroy
in all my holy mountain;
for the earth shall be full of the knowledge of the LORD
as the waters cover the sea.
[10] In that day the root of Jesse, who shall stand as a signal for the peoples—of him shall the nations inquire, and his resting place shall be glorious.[11] In that day the Lord will extend his hand yet a second time to recover the remnant that remains of his people, from Assyria, from Egypt, from Pathros, from Cush, from Elam, from Shinar, from Hamath, and from the coastlands of the sea.
[12] He will raise a signal for the nations
and will assemble the banished of Israel,
and gather the dispersed of Judah
from the four corners of the earth.
[13] The jealousy of Ephraim shall depart,
and those who harass Judah shall be cut off;
Ephraim shall not be jealous of Judah,
and Judah shall not harass Ephraim.
[14] But they shall swoop down on the shoulder of the Philistines in the west,
and together they shall plunder the people of the east.
They shall put out their hand against Edom and Moab,
and the Ammonites shall obey them.
[15] And the LORD will utterly destroy
the tongue of the Sea of Egypt,
and will wave his hand over the River
with his scorching breath,
and strike it into seven channels,
and he will lead people across in sandals.
[16] And there will be a highway from Assyria
for the remnant that remains of his people,
as there was for Israel
when they came up from the land of Egypt. (ESV)