This is not something new. God has given Jesus present rule.

“ … “All authority has been given to me in heaven and on earth.”
Mtt 28:18 WEB

Jesus is now, and will be “the ruler of the kings of the earth,” Rev 1:5. He will continue to rule from the heavenly Jerusalem until,

“… he has put all his enemies under his feet.”
1Cor 15:25 WEB

To think that Jesus would step down from ruling ALL from the heavenly Jerusalem (Rev 21:1-2, etc.), to rule from earthly Jerusalem, is a gross misunderstanding of prophecy. The premillenialists confuse prophecies of this present earth, with prophecies of heaven.

These are ongoing processes.

“He increases the nations, and he destroys them.
He enlarges the nations, and he leads them captive.”
Job 12:23 WEB

Sometimes nations seek good things, and God prospers them. Or they turn away from good things, ruin themselves, and God disciplines or destroys them. Once again, these are ongoing processes in history, reflected in prophecy, all the way from Genesis to Revelation, and is definitely still going on. In the words of the prophet Daniel,

“21 He changes the times and the seasons; he removes kings, and sets up kings; he gives wisdom to the wise, and knowledge to those who have understanding; 22 he reveals the deep and secret things; he knows what is in the darkness, and the light dwells with him.”
Dan 2:21-22 WEB

We often act as if God does not know what we are doing, but it says,

“9 He who implanted the ear, won’t he hear?
He who formed the eye, won’t he see?
10 He who disciplines the nations, won’t he punish?
He who teaches man knows.”
Psa 94:9-10 WEB

King Nebuchadnezzar of Babylon (ruling 605-562 BC) wrote of Yahweh,

“34 … his dominion is an everlasting dominion, and his kingdom from generation to generation. 35 All the inhabitants of the earth are reputed as nothing; and he does according to his will in the army of heaven, and among the inhabitants of the earth; and none can stay his hand, or tell him, What do you?”
Dan 4:34-35 WEB

That is history. It is the Liberal theories that are myths and fantasies, mere narratives to distract us from the truth.

Some of this is scarcely complimentary to either
rulers or the peoples.

Again this is the words of Nebuchadnezzar.

“… to the intent that the living may know that the Most High rules in the kingdom of men, and gives it to whoever he will, and sets up over it the lowest of men.”
Dan 4:17 WEB

Isn’t that the truth.

God decides where peoples will live, Acts 17:26.

Yahweh says,

“… “Haven’t I brought up Israel out of the land of Egypt, and the Philistines from Caphtor, and the Syrians from Kir?””
Amos 9:7 WEB

And purpose, what is the purpose?

“that they should seek the Lord, if perhaps they might reach out for him and find him, though he is not far from each one of us.”
Acts 17:27 WEB

We are studying the context in which God deals with men, earth age long!

WEB is the World English Bible, a copyright free revision
of the original ASV American Standard Version 1901