Just after the bit where His feet land on the mount of Olives, and He judges the nations I guess.
I was hoping for a more definitive answer. Early scholars had a different interpretation of Zech 14:4-5. For example, this is Tertullian:
"Some places there were in Jerusalem where to teach; other places outside Jerusalem whither to retire—'In the day-time He was teaching in the temple;' just as He had foretold by Hosea: 'In my house did they find me, and there did I speak with them.' 'But at night He went out to the Mount of Olives' (Luke 21:37). For thus had Zechariah pointed out: 'And His feet shall stand in that day on the Mount of Olives' (Zech 14:4). Fit hours for an audience there also were. 'Early in the morning' must they resort to Him, who (having said by Isaiah,' The Lord giveth me the tongue of the learned') added, 'He hath appointed me the morning, and hath also given me an ear to hear' (Isa 50:4). Now if this is to destroy the prophets, what will it be to fulfil them?" [Roberts & Donaldson, Tertullian, Against Marcion, "Ante-Nicene Fathers Vol 03: Latin Christianity." Charles Scribner's Sons, Amer Ed, 1918, Book IV.xxxix, p.417]
And Eusebius:
"And it was when our Lord Jesus, the Christ of God, had (c) visited the olive-grove over against Jerusalem (Mat 24:1), since the words of the prophecy were fulfilled which said, 'His feet shall stand upon the Mount of Olives opposite to Jerusalem (Zec 14:4),' that is, the life of holiness having been established throughout all the world, that all the nations, according to the prophecy, kept the Feast of Tabernacles together in every place to the God of the prophets (Zec 14:16), and the Egyptians from that time recognizing God erected tents in every town and country place, which mean the local Christian Churches. For the power of our Saviour Jesus Christ has pegged them far better than Moses' tents through the whole world, so that every race of men and all the Gentiles may keep their Feast of Tabernacles to Almighty God." [William John Ferrar, Demonstratio Evangelica, "Eusebius: Proof of the Gospel Vol II." MacMillan& Co., 1920, Book VIII.4, pp.146-147]
Besides, there is not a whisper about an earthly reign in Revelation 20:
"And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years. But the rest of the dead lived not again until the thousand years were finished. This is the first resurrection. Blessed and holy is he that hath part in the first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years." -- Rev 20:4-6 KJV
Even the land promise ultimately pointed to another place. When Samuel made this promise, the children of Israel were living in Canaan under King David:
"Now therefore so shalt thou say unto my servant David, Thus saith the Lord of hosts, I took thee from the sheepcote, from following the sheep, to be ruler over my people, over Israel: And I was with thee whithersoever thou wentest, and have cut off all thine enemies out of thy sight, and have made thee a great name, like unto the name of the great men that are in the earth. Moreover I will appoint a place for my people Israel, and will plant them, that they may dwell in a place of their own, and move no more; neither shall the children of wickedness afflict them any more, as beforetime," -- 2Sam 7:8-10 KJV
And the promises to Abraham and the fathers points to a heavenly residence:
"By faith Abraham, when he was called to go out into a place which he should after receive for an inheritance, obeyed; and he went out, not knowing whither he went. By faith he sojourned in the land of promise, as in a strange country, dwelling in tabernacles with Isaac and Jacob, the heirs with him of the same promise: For he looked for a city which hath foundations, whose builder and maker is God . . . These all died in faith, not having received the promises, but having seen them afar off, and were persuaded of them, and embraced them, and confessed that they were strangers and pilgrims on the earth. For they that say such things declare plainly that they seek a country . . . But now they desire a better country, that is, an heavenly: wherefore God is not ashamed to be called their God: for he hath prepared for them a city." -- Heb 11:8-10, 13-14,16 KJV
Even Paul was seeking a heavenly kingdom:
"And the Lord shall deliver me from every evil work, and will preserve me unto his heavenly kingdom: to whom be glory for ever and ever. Amen." -- 2Tim 4:18 KJV
Therefore, I am seeking support for an earthly kingdom that is more obvious than the obscure passage from Zechariah 14. Besides, the Septuagint points to the first century destruction of Jerusalem as the fulfillment of Zech 14:1-3,
"Behold, the days of the Lord come, and thy spoils shall be divided in thee. And I will gather all the Gentiles to Jerusalem to war, and the city shall be taken, and the houses plundered, and the women ravished; and half of the city shall go forth into captivity, but the rest of my people shall not be utterly cut off from the city. And the Lord shall go forth, and fight with those Gentiles as when he fought in the day of war." -- Zec 14:1-3 LXX
Rev