The Kingdoms of this world belong to Satan. Jesus refused to worship Satan to acquire them.
Matthew 4:8-10
8Again, the devil taketh him up into an exceeding high mountain, and sheweth him all the kingdoms of the world, and the glory of them; 9And saith unto him, All these things will I give thee, if thou wilt fall down and worship me. 10Then saith Jesus unto him, Get thee hence, Satan: for it is written, Thou shalt worship the Lord thy God, and him only shalt thou serve.
His Kingdom is after the resurrection from the dead. This (below) did not happen before Jesus ascended into Heaven.
Matthew 19:28
And Jesus said unto them, Verily I say unto you, That ye which have followed me, in the regeneration when the Son of man shall sit in the throne of his glory, ye also shall sit upon twelve thrones, judging the twelve tribes of Israel.
Preach this gospel then the end will come.
Matthew 24:14
And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come.
We inherit it after the harvest of the end of the world
Matthew 25 (See also Revelation 14:14-19)
31When the Son of man shall come in his glory, and all the holy angels with him, then shall he sit upon the throne of his glory: 32And before him shall be gathered all nations: and he shall separate them one from another, as a shepherd divideth his sheep from the goats: 33And he shall set the sheep on his right hand, but the goats on the left. 34Then shall the King say unto them on his right hand, Come, ye blessed of my Father, inherit the kingdom prepared for you from the foundation of the world: 41Then shall he say also unto them on the left hand, Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels:
Jesus did not drink of the fruit of the vine with His disciples between His resurrection and His ascension. His Father’s kingdom is the millennium.
Matthew 26:29
But I say unto you, I will not drink henceforth of this fruit of the vine, until that day when I drink it new with you in my Father's kingdom.
We either inherit His Kingdom or go to everlasting torment
Mark 9:47
And if thine eye offend thee, pluck it out: it is better for thee to enter into the kingdom of God with one eye, than having two eyes to be cast into hell fire.
It is after the first resurrection from the dead
Luke 13:28
There shall be weeping and gnashing of teeth, when ye shall see Abraham, and Isaac, and Jacob, and all the prophets, in the kingdom of God, and you yourselves thrust out.
Those who are counted worthy to inherit the kingdom, and those who are resurrected, will not marry in that world
Luke 20
27Then came to him certain of the Sadducees, which deny that there is any resurrection; and they asked him, 28Saying, Master, Moses wrote unto us, If any man's brother die, having a wife, and he die without children, that his brother should take his wife, and raise up seed unto his brother. 29There were therefore seven brethren: and the first took a wife, and died without children. 30And the second took her to wife, and he died childless. 31And the third took her; and in like manner the seven also: and they left no children, and died. 32Last of all the woman died also.33Therefore in the resurrection whose wife of them is she? for seven had her to wife. 34 And Jesus answering said unto them, The children of this world marry, and are given in marriage: 35But they which shall be accounted worthy to obtain that world, and the resurrection from the dead, neither marry, nor are given in marriage: 36Neither can they die any more: for they are equal unto the angels; and are the children of God, being the children of the resurrection.
It cannot be seen, we hope for it in our hearts.
Luke 17:20,21
And when he was demanded of the Pharisees, when the kingdom of God should come, he answered them and said, The kingdom of God cometh not with observation: Neither shall they say, Lo here! or, lo there! for behold, the kingdom of God is within you.
Know that the kingdom of God is at hand once we see Him coming in the clouds to catch us up.
Luke 21
24And they shall fall by the edge of the sword, and shall be led away captive into all nations: and Jerusalem shall be trodden down of the Gentiles, until the times of the Gentiles be fulfilled. 25And there shall be signs in the sun, and in the moon, and in the stars; and upon the earth distress of nations, with perplexity; the sea and the waves roaring; 26Men's hearts failing them for fear, and for looking after those things which are coming on the earth: for the powers of heaven shall be shaken. 27And then shall they see the Son of man coming in a cloud with power and great glory. 28And when these things begin to come to pass, then look up, and lift up your heads; for your redemption draweth nigh. 31So likewise ye, when ye see these things come to pass, know ye that the kingdom of God is nigh at hand.
It is not of this world, He will not bow to Satan
John 18:36
Jesus answered, My kingdom is not of this world.
It is not in the financial realm
Romans 14:17
For the kingdom of God is not meat and drink; but righteousness, and peace, and joy in the Holy Ghost.
Sinners cannot inherit it, Be not deceived
1 Corinthians 6:9-11
8Nay, ye do wrong, and defraud, and that your brethren. 9Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind, 10Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.
We cannot inherit it in these physical bodies
1 Corinthians 15:50
Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; neither doth corruption inherit incorruption 1 Corinthians 15:52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed.
Great voices in Heaven prophetically declare His coming Kingdom after the tribulation
Revelation 11:15
And the seventh angel sounded; and there were great voices in heaven, saying, The kingdoms of this world are become the kingdoms of our Lord, and of His Christ; and He shall reign for ever and ever.
Jesus’ kingdom starts when Satan is cast down. It will not be simultaneous to Satan’s kingdom. Jesus will not bow down to Satan. He will cast him down. He casts him down at His return to earth with His bride and He ends the tribulation. (Revelation 19 and 20)
Revelation 12:10
And I heard a loud voice saying in heaven, Now is come salvation, and strength, and the kingdom of our God, and the power of his Christ: for the accuser of our brethren is cast down, which accused them before our God day and night.
This is after the first resurrection, after we have been caught up and changed to incorruptible bodies. Satan is bound for a thousand years, we are not in this corrupt world, we are in the time of restitution of all things (Acts 3:21) or the millennium.
Revelation 20:4
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. 5But the rest of the dead lived not again until the thousand years were finished. This is the first resurrection.
Jesus will remain in Heaven until it is time for His Kingdom and time for Him to restore everything. Read of His return in Revelation 19 & 20
Acts 3: 21Whom the heaven must receive until the times of restitution of all things, which God hath spoken by the mouth of all his holy prophets since the world began.
The prophets of old foresaw the millennium, the time of restitution of all things. (Acts 3:21)
Isaiah 11
4But with righteousness shall he judge the poor, and reprove with equity for the meek of the earth: and he shall smite the earth: with the rod of his mouth, and with the breath of his lips shall he slay the wicked. (We read of the fulfillment of this verse above in Revelation 19:15. “And out of his mouth goeth a sharp sword, that with it he should smite the nations: and he shall rule them with a rod of iron: and he treadeth the winepress of the fierceness and wrath of Almighty God”.) 5And righteousness shall be the girdle of his loins, and faithfulness the girdle of his reins. 6The 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. 7And the cow and the bear shall feed; their young ones shall lie down together: and the lion shall eat straw like the ox. 8And the sucking child shall play on the hole of the asp, and the weaned child shall put his hand on the cockatrice' den. 9They shall not hurt nor destroy in all my holy mountain: for the earth shall be full of the knowledge of the LORD, as the waters cover the sea. 12And he shall set up an ensign for the nations, and shall assemble the outcasts of Israel, and gather together the dispersed of Judah from the four corners of the earth. 13The envy also of Ephraim shall depart, and the adversaries of Judah shall be cut off: Ephraim shall not envy Judah, and Judah shall not vex Ephraim.
Those who have endured to the end will reign with Him
4And 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.
