I'm curious. How do you make the connection between "the end point" (Hebrew olem) of v15 and the Roman Empire? Why could it not refer to the restored earth in Revelation 20-22? I think those chapters talk about a new earth (really "land" in their cosmology) with a city, mountains, and rivers. Why couldn't that be the land God promised Abraham and his seed?
Look at the scriptures and what they tell us and the historical record for Israel. 2 Chronicles 7:12ff tells us that God will remove the Israelites from the "Promised Land" and cause them to be scattered throughout the whole earth and that the Temple would be destroyed and not be rebuilt. All of this happened in 70 A.D. when the last tribes of Israel were also taken into captivity and sold as slaves to the nations. Joel the prophet wrote about this.
Genesis 12:1-3: - Promises to Abram
(Acts 7:2-5)
12:1 Now the Lord had said
[1] to Abram:
[2]
"Get out of your country,
From your family
And from your father's house,
To an earth that I will show you.
2 I will make you a great nation;
I will bless you
And make your name great;
And you shall be a blessing.
3 I will bless those who bless you,
And I will curse him who curses you;
And through you all the families of the ground/land [3] shall be blessed."
In Genesis 15:1-8 God again tells Abraham that he will in the future possess the whole earth but Abraham asked how will I know this, and so we have the resulting Giving of the Solemn "Promised Land" covenant where God defines the land area that they will have possession of, as the sign that will confirm that in the distant future they will have possession of the whole earth.
Genesis 15:1-8 - God's Covenant with Abram
(Heb 11:8-10)
15:1 After these things the word of the Lord came to Abram in a vision, saying, "Do not be afraid, Abram. I am your shield, your exceedingly great reward."
2 But Abram said, "Lord God, what will You give me, seeing I go childless, and the heir of my house is Eliezer of Damascus?" 3 Then Abram said, "Look, You have given me no offspring; indeed one born in my house is my heir!"
4 And behold, the word of the Lord came to him, saying, "This one shall not be your heir, but one who will come from your own body shall be your heir." 5 Then He brought him outside and said, "Look now toward heaven, and count the stars if you are able to number them." And He said to him, "So shall your descendants be."
6 And he believed in the Lord, and He accounted it to him for righteousness.
7 Then He said to him, "I am the Lord, who brought you out of Ur of the Chaldeans, to give you this earth to possess it."
8 And he said, "Lord God, how shall I know that I will possess it?"
What follows this as the sun was going down are three short prophecies.
The first concerning Israel living in Egypt and becoming slaves there and that God will bring them out of Egypt after being slaves for around 400 years that God, Himself will bring them out with great possessions.
The second concerning Abraham's life, that he would live to an old age and die in peace.
The Third concerning Abraham's descendants returning to the Land of Canaan in their own strength during the fourth age of their existence.
Finally, as the sun set, God enters into the solemn confirmation/sign covenant with Abraham that when they had possession of the land so defined by God in this covenant that they will know, that in the distant future they will receive possession of the whole earth. This is the "Promised Land" that God said that he would remove them from in 2 Chronicles 7:12ff because of their continual idolatrous worship of idols.
How do i know this? From reading all of the scriptures and considering the historical history of Israel, which includes their return to the Land of Canaan in their own strength, during the fourth age of their existence in 1948, exactly, from my understanding, 4,000 years from when Isaac was born. Jesus then tells us when Israel will be redeemed and will be gathered by God once more in the one verse prophecy found in Matthew 24:32, when they will take part in the Great Harvest of souls during the Seventh Age before the Final time of Judgement.
Shalom
[1] The Lord called Abram while he was in Ur (see Gen 15:7; Acts 7:2); but the sequence here makes it look like it was after the family left to migrate to Canaan (11:31-32). Genesis records the call of Abram at this place in the narrative because it is the formal beginning of the account of Abram. The record of Terah was brought to its end before the narrative of Abraham begins.
[2] The call of Abram begins with an imperative לֶךְ־ לְךָ֛ (lekh-l®kha, "
go out") followed by three cohortatives (v. 2 a) indicating purpose or consequence ("that I may" or "then I will"). If Abram leaves, then God will do these three things. The second imperative (v. 2 b, literally "and be a blessing") is subordinated to the preceding cohortatives and indicates God's ultimate purpose in calling and blessing Abram. On the syntactical structure of vv. 1-2 see R. B. Chisholm, "
Evidence from Genesis," A Case for Premillennialism, 37. For a similar sequence of volitive forms see Gen 45:18.
It would be hard to overestimate the value of this call and this divine plan for the theology of the Bible. Here begins God's plan to bring redemption to the world. The promises to Abram will be turned into a covenant in Gen 15 and 22 (here it is a call with conditional promises) and will then lead through the Bible to the work of the Messiah.
[3] The Hebrew Root of
הָאֲדָמָֽה, H:0127, has the meaning of soil, and is akin to a fertile field/face of the land/world.
Genesis 2:7: –– 7 And the Lord God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living being.
One could argue that what is being said here is that all of the peoples of the world that occupy God’s fertile field/ground will be blessed. The flip side of this covenant is that all of the people who do not occupy God’s fertile field/ground will be cursed.