So all try to build a physical kingdom on earth in Christ’s name.
And some simply quote the promise of God concerning the physical Kingdom which we generally call the Millennial Kingdom.
Here are a few passages which show this coming Kingdom:
Isaiah 65:20
King James Version (KJV)
20 There shall be no more thence an infant of days, nor an old man that hath not filled his days: for the child shall die an hundred years old; but the sinner being an hundred years old shall be accursed.
Isaiah 11:6
King James Version (KJV)
6 The wolf also shall dwell with the lamb, and the leopard shall lie down with the kid; and the calf and the young lion and the fatling together; and a little child shall lead them.
There shall be long life and the enmity between animals and animals, and man and animals will no longer exist.
We also see a physical Kingdom after Christ's Return through His Own teachings:
Luke 17:26-37
King James Version (KJV)
26 And as it was in the days of Noe, so shall it be also in the days of the Son of man.
27 They did eat, they drank, they married wives, they were given in marriage, until the day that Noah entered into the ark, and the flood came, and destroyed them all.
28 Likewise also as it was in the days of Lot; they did eat, they drank, they bought, they sold, they planted, they builded;
29 But the same day that Lot went out of Sodom it rained fire and brimstone from heaven, and destroyed them all.
30 Even thus shall it be in the day when the Son of man is revealed.
31 In that day, he which shall be upon the housetop, and his stuff in the house, let him not come down to take it away: and he that is in the field, let him likewise not return back.
32 Remember Lot's wife.
Christ makes it clear that when He returns He will destroy the unbelievers. This is just basic to the Eschatology of Christ.
He continues His teaching on the coming destruction, which is known as The Day of he Lord:
33 Whosoever shall seek to save his life shall lose it; and whosoever shall lose his life shall preserve it.
34 I tell you, in that night there shall be two men in one bed; the one shall be taken, and the other shall be left.
35 Two women shall be grinding together; the one shall be taken, and the other left.
36 Two men shall be in the field; the one shall be taken, and the other left.
37 And they answered and said unto him, Where, Lord? And he said unto them, Wheresoever the body is, thither will the eagles be gathered together.
The Lord makes it clear that those taken are taken in judgment, which is the context of the days of Noah and Lot. Utter destruction upon all but those kept from the judgment.
The "body" above speaks of the dead, and in view is carcasses being feasted upon by carrion fowl, not something new to Prophecy:
Ezekiel 39
King James Version (KJV)
1 Therefore, thou son of man, prophesy against Gog, and say, Thus saith the Lord God; Behold, I am against thee, O Gog, the chief prince of Meshech and Tubal:
2 And I will turn thee back, and leave but the sixth part of thee, and will cause thee to come up from the north parts, and will bring thee upon the mountains of Israel:
3 And I will smite thy bow out of thy left hand, and will cause thine arrows to fall out of thy right hand.
4 Thou shalt fall upon the mountains of Israel, thou, and all thy bands, and the people that is with thee: I will give thee unto the ravenous birds of every sort, and to the beasts of the field to be devoured.
5 Thou shalt fall upon the open field: for I have spoken it, saith the Lord God.
The destruction here cannot be confused with God destroying the unbelieving following the Millennial Kingdom, first, because at that time the current universe passes away and the Great White Throne commences, then the new heavens and Earth are created (Revelation 20-22), and we do not see the concept of "falling upon the open field" that the birds and beasts might feed upon their flesh.
Secondly, if we continue in Chapter 39 we see a continuance of the current creation for an extended period which also denies the destruction of Revelation 20 is in view:
8 Behold, it is come, and it is done, saith the Lord God; this is the day whereof I have spoken.
9 And they that dwell in the cities of Israel shall go forth, and shall set on fire and burn the weapons, both the shields and the bucklers, the bows and the arrows, and the handstaves, and the spears, and they shall burn them with fire seven years:
10 So that they shall take no wood out of the field, neither cut down any out of the forests; for they shall burn the weapons with fire: and they shall spoil those that spoiled them, and rob those that robbed them, saith the Lord God.
11 And it shall come to pass in that day, that I will give unto Gog a place there of graves in Israel, the valley of the passengers on the east of the sea: and it shall stop the noses of the passengers: and there shall they bury Gog and all his multitude: and they shall call it The valley of Hamongog.
12 And seven months shall the house of Israel be burying of them, that they may cleanse the land.
This correlates to Christ's Return as prophesied by John:
Revelation 19:17-21
King James Version (KJV)
17 And I saw an angel standing in the sun; and he cried with a loud voice, saying to all the fowls that fly in the midst of heaven, Come and gather yourselves together unto the supper of the great God;
18 That ye may eat the flesh of kings, and the flesh of captains, and the flesh of mighty men, and the flesh of horses, and of them that sit on them, and the flesh of all men, both free and bond, both small and great.
19 And I saw the beast, and the kings of the earth, and their armies, gathered together to make war against him that sat on the horse, and against his army.
20 And the beast was taken, and with him the false prophet that wrought miracles before him, with which he deceived them that had received the mark of the beast, and them that worshipped his image. These both were cast alive into a lake of fire burning with brimstone.
21 And the remnant were slain with the sword of him that sat upon the horse, which sword proceeded out of his mouth: and all the fowls were filled with their flesh.
As Christ states in John 3, no man will enter the Kingdom of God except they be born again. In the context of Christ's meeting with Nicodemus we remember that the Lord was not revealing the Mystery of the Gospel to men, and that He ministered within the framework of the revelation provided to men in that day. The Kingdom Nicodemus would have understood is the Kingdom the Disciples ask about here:
Acts 1:4-7
King James Version (KJV)
4 And, being assembled together with them, commanded them that they should not depart from Jerusalem, but wait for the promise of the Father, which, saith he, ye have heard of me.
5 For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence.
6 When they therefore were come together, they asked of him, saying, Lord, wilt thou at this time restore again the kingdom to Israel?
7 And he said unto them, It is not for you to know the times or the seasons, which the Father hath put in his own power.
Christ does not say "There's a new plan," but, "It's not for you to know when that is going to take place."
While we can, having been granted the revelation of the New Testament, understand Christ in John 3 in a broader perspective than Nicodemus, still, Nicodemus should have remembered how the Lord said He would resurrect Israel, which I will not post due to length, but simply say Ezekiel 37 should have come to mind, rather than physical birth.
God bless.