A gentile must become as Israel, by righteously serving a master of a family of Israel, in the land of Israel, to receive an inheritance in the eternal Kingdom.  The house of Israel, the chosen people, is promised to receive an eternal inheritance in the land of Israel.  A gentile, who is not a bondservant unto a master of a family of Israel, will not be given this promise.
Why is this true?
Because Israel will rule in righteousness, being like-minded as the Almighty.  The house of Israel will become joined unto the house of Judah, who are promised to receive the righteous master, Jesus:(YaHuWSHuWAh) Christ:(MaSHiYCH), IN the Eternal Kingdom.

ISA 48:1  Hear:(declare) ye this, O house of Jacob:(the 12 tribes of Israel), which are called:(addressed) by the name of Israel, and are come forth out of the waters:(watering course of Judah):(those, who reverence and worship YaHuWaH with extended hands), which:(who) swear:(took an oath) by the name:(honour, authority, and character) of YaHuWaH, and made mention:(recognize) ALaHiYM of Israel, for want of truth, and for want of righteousness.

ISA 48:1 made clear:
Declare this, O house of Jacob, who are addressed by the name Israel, and are come forth out of the watering courses of Judah:(those, who reverence and worship YaHuWaH with extended hands), who took an oath with righteous honour, authority, and character of YaHuWaH, and recognized YaHuWaH ALaHiYM of Israel, for want of truth and want of righteousness.

ISA 48:2  For:(truly) they call:(proclaiming) themselves:(holiness) of the Holy City, and stay:(standing fast) themselves upon:(among) ALaHiYM of Israel;  YaHuWaH servant named.

ISA 48:2 made clear:
Truly proclaiming holiness from the city courts:( Mount Zion, Jerusalem), standing fast among YaHuWaH ALaHiYM of Israel;  YaHuWaH servants named.

ISA 48:3  I have declared the former things from the beginning; and they went forth out of my mouth, and I shewed them; I did them suddenly, and they came to pass.

ISA 48:3 made clear:
Declared what was from the beginning, uttering forth from the mouth, the commandments, with understanding, straightway and bringing forth the Law.

ISA 48:4  I, since then, (knew that the children of Israel art obstinate, and thy neck is an iron sinew, and thy brow brass);

ISA 48:4 made clear:
From the beginning, knew that the children of Israel are stiffnecked:(stubborn) as an iron sinew: the forehead as brass.

YaHuWaH ALaHiYM knew from the beginning that the children of Israel are a stiffnecked stubborn people.

ISA 48:5  From the beginning, at that time, I declared:(made known) the Law, proclaiming YaHuWaH law, that they might be obedient and have understanding: lest thou shouldest say, mine idol hath done them, and my graven image, and my molten image, hath commanded them.

ISA 48:5 made clear:
Then from the beginning, denounced, before the occurrence came to pass, causing to hear, lest saying, the idol that I fashioned, brought forth, the graven image, the molten image gave the commandments.

At that time, from the beginning, YaHuWaH ALaHiYM denounced the actions of Israel's disobedience, before the rebellious acts came to pass, causing Israel to hear the commanded warnings, the consequences of rebellion, lest Israel should say, the idol that I fashioned brought forth the commanded warnings; the graven image: the molten image gave the commandments.

ISA 48:6  Thou hast heard:(to hear, teach, proclaim), see:(to behold, provide) all this;  And will not:(truly) ye:(you) declare it?  I have shewed:(heard, proclaimed, discerned) thee new things:(new teaching) from:(at) this time, even hidden things:(to guard, maintain, protect, preserve, observe, watchman), and thou didst not know:(known) them.

Isaiah 48:6 made clear:
The tribes of Israel heard what was taught and proclaimed, to behold all, which was provided, so that all, which was provided, would be truly declared by the children of Israel, who heard what was proclaimed as a new teaching, and who discerned what was new, at that time, for the purpose of guarding, maintaining, protecting, and preserving those, who will observe and be a watchman over the new message, which was previously not known.

This scripture show what the children of Israel are commanded to declare.  The Law of ALaHiYM was taught to the children of Israel.  The Law is provided as a protection, to preserve the children of Israel.  It is commanded within the Law that the children of Israel proclaim this same Law, which was provided to them, unto their seed, and so forth, unto the next generations, so that their descendants, and the descendant's descendants would also be protected and preserved, for observing and maintaining, as a watchman, the Law, which was not known by the children of Israel prior to that time, when it was taught to them.

ISA 48:7  YaHuWaH chose the children of Israel, (to teach and establish them, at that time, henceforth), in the beginning, at that time;  That the children of Israel would enquire, beseech the truth, and endure perpetually in the Law;  For, before that time, they were without understanding;  Lest Israel shouldest say, behold, I had knowledge and understanding, before that time.

The children of Israel were chosen to be the people of YaHuWaH.  They were taught the Law, and were established as the people of YaHuWaH ALaHiYM, at that time.  Before that time, in the beginning, the tribes of Israel were not taught the Law, nor were they established as the people of YaHuWaH ALaHiYM.  They did not know the Law, before it was proclaimed to them, at that time.  Lest, they would say, behold, I knew the Law, before it was proclaim to me by YaHuWaH ALaHiYM.

ISA 48:8  Yea, thou heardest not;  Yea, thou knewest not;  Yea, from that time that thine ear was not opened: for I knew that thou wouldest deal very treacherously, and wast called a transgressor from the womb.

In the beginning, before that time, the children of Israel did not have knowledge of the Law.  In the beginning, before that time, the children of Israel had no knowledge of the Law.  Since then from that time, when the Law was proclaimed to the children of Israel, their ears were not opened.  Because YaHuWaH knew that they would deal treacherously and become unfaithful.  The children of Israel were addressed as transgressors from the womb.

In other words, the children of Israel would not continue in obeying the Law.  Therefore, knowing that the children of Israel would deal deceitfully and very treacherously, they were called transgressors from the womb.  The children of Israel were hostile, being against YaHuWaH ALaHiYM Law.

ISA 48:9  Because of YaHuWaH name:(honour, authority, and character) sake, anger is deferred:(put off, postponed), for by praising and reverencing YaHuWaH, the cutting off of Israel is refrained.

The children of Israel honoured YaHuWaH ALaHiYM with righteous character and authority, for a little while, before they began to turn away from obeying the Law of ALaHiYM.  Therefore, because of their temporary obedience to the Law, YaHuWaH ALaHiYM postponed the cutting off of the children of Israel

ISA 48:10  Behold, Israel is refined, but not with silver;  They are proved in the furnace of affliction.

ISA 48:11  For my own sake, I will provide for that which is profaned.  YaHuWaH glory will not be given to another.

YaHuWaH ALaHiYM chose the seed of Abraham, namely the house of Jacob, whose name was changed to Israel.  Of a truth, YaHuWaH glory will not be given to another people.

Anybody, who want to be a part of this chosen family, must become a citizen of Israel.

EPH 2:11  Therefore, remember that ye, in time past, existed as gentiles in the flesh, who are called the uncircumcised by the individuals, who are circumcised in the flesh, made by hands.
EPH 2:12  Then, at that time, ye were without Christ:(MaSHiYCH) Jesus:(YaHuWSHuWAh), being aliens from the commonwealth:(citizenship) of Israel, and strangers from the Covenants of Promise, having no hope, and without ALaHiYM, in the world:

Who were the Covenants of Promise given to?

The Covenants of Promise was appointed for Abraham and his chosen descendants, namely the whole house of Israel, who would become joined unto Jesus:(YaHuWSHuWAh) Christ:(MaSHiYCH), the Master.  The Master, Jesus:(YaHuWSHuWAh) Christ:(MaSHiYCH), was from the tribe of Judah.  The tribe of Judah was one of the twelve tribes of Israel.  Therefore, He came from the house of Jacob, who came from the house of Isaac.  Abraham was the father of Isaac, whom YaHuWaH chose.

The second promise was declared unto David, king of Judah.  YaHuWaH declared unto David, that he would have a Seed, to sit upon the throne of Israel, perpetually without end.

Therefore, (under the Two Cherubs), the gentiles, who will join themselves to become a citizen of Israel, along with the desired performance of living the Law, will be accepted by YaHuWaH Almighty, as the chosen people, Israel.

EPH 2:13  But now, that you have given yourself wholly unto Jesus:(YaHuWSHuWAh) Christ:(MaSHiYCH), you, who in times past were far off, are made nigh by the blood of Christ:(MaSHiYCH).

Some, from the gentile nations, became servants in YaHuWaH's House of ALaHiYM of Jacob, during the days, when the Apostles were given authority as masters over the servants, who believed in Jesus:(YaHuWSHuWAh).

This performance of the Law will occur again.  A prophecy, which will be fulfilled in the end time, concerning the reestablishment of the servants under the Two Cherubs, who will reestablish YaHuWaH's House of ALaHiYM of Jacob.

This is commanded within the Law for the stranger, who wanted to live within the nation of the children of Israel.  Abraham, the forefather of the children of Israel, performed a great example of what must be done.

What was Abraham commanded to do?

GEN 17:7  I will establish the Covenant with your seed hereafter in their generations, for an Everlasting Covenant, to be a God unto your seed, hereafter.
GEN 17:8  I will give, unto your seed hereafter, the land where you sojourn: namely, all the land of Canaan, for an Everlasting possession.  I will be their God.

GEN 17:9  And God said unto Abraham, you are to keep, namely the Covenant: you and your seed hereafter in their generations.

GEN 17:10  Likewise, the Covenant that is to be kept with your seed after you, all males must be circumcised.
GEN 17:11  Circumcise the flesh of the foreskin, as a mark of the Covenant with the circumcised.
GEN 17:12  Circumcise all males, who are eight-days-old descendant born in the house, and who are bought with money of any born foreign, who are not descended from you.
GEN 17:13  The male born in the house, and the male bought with money, must be circumcised: the cutting exist in the flesh for an Everlasting Covenant.
GEN 17:14  The uncircumcised male whose flesh of the foreskin is not circumcised: that person will be cut off from his people;  He has broken namely the Covenant.

(This up above is commanded in the Law that was given to Moses.)

No doubt, Abraham lived by the same Law that was given to the children of Israel.

KJV:
GEN 22:18  And 'in' thy seed shall all the nations of the earth be blessed; because thou hast obeyed my voice.

The word 'in', up above, was added by the translators.

Again:
GEN 22:18  Your seed will all the nations of the earth bless:(praise, thank, salute).  Because you have obeyed my voice.

Made Clear:
All of the nations of the earth will bless Abraham's seed, because Abraham obeyed the voice of ALaHiYM. Gentile nations will become citizens of Israel, in the Eternal Kingdom.

GEN 26:2  And YaHuWaH appeared unto him, and said, go not down into Egypt;  dwell in the land, which I shall tell thee of:
GEN 26:3  Sojourn in this land, and I will be with thee, and will bless thee;  For unto thee, and unto thy seed:(chosen descendants), I will give all these countries, and I will perform the oath, which I sware unto Abraham, thy father;
GEN 26:4  And I will make thy seed:(chosen descendants) to multiply as the stars of heaven, and will give unto thy seed:(chosen descendants) all these countries.  Your seed:(chosen descendants) will all the nations of the earth worship.
GEN 26:5  Because that Abraham obeyed my voice, and kept my charge, my commandments, my statutes, and my laws.
GEN 26:6  And Isaac dwelt in Gerar:

EXO 12:43  And YaHuWaH said unto Moses and Aaron, this is the ordinance of the Passover: there shall no stranger eat thereof:

The passover lambs represented the true Passover Lamb to come, namely Jesus:(YaHuWSHuWAh) Christ:(MaSHiYCH).  Those, who rejected the keeping of the Passover, were cut of from the chosen people.

GEN 17:14  The uncircumcised male whose flesh of the foreskin is not circumcised: that person will be cut off from his people;  He has broken namely the Covenant.

NUM 9:9  And YaHuWaH spake unto Moses, saying,
NUM 9:10  Speak unto the children of Israel, saying, if any man of you or of your posterity shall be unclean by reason of a dead body, or be in a journey afar off, yet he shall keep the Passover unto YaHuWaH
NUM 9:11  The fourteenth day of the second month at even they shall keep it, and eat it with unleavened bread and bitter herbs.
NUM 9:12  They shall leave none of it unto the morning, nor break any bone of it: according to all the ordinances of the passover, they shall keep it.
NUM 9:13  But the man, who is clean and is not in a journey, forbearing to keep the Passover, even the same soul shall be cut off from among his people: because he brought not the offering of YaHuWaH in his appointed season.  That man shall bear his sin.
NUM 9:14  And if a stranger shall sojourn among you, and will keep the passover unto YaHuWaH;  According to the ordinance of the passover, and according to the manner thereof, so shall he do: ye shall have one ordinance, both for the stranger, and for him that was born in the land.

Those, who did not keep the Passover according to its ordinances that are recorded in the Law, did not bring forth Jesus:(YaHuWSHuWAh) Christ:(MaSHiYCH).  They were in rebellion unto the performance of this commandment, which is written in the Law.  They were just like Cain, who did not keep the Passover according to the Law.

Cain was a man who willfully sinned.  Sin was crouching at his door.  The desire to sin was in Cain, but YaHuWaH ALaHiYM rebuked him for sinning, and ALaHiYM told Cain that he must overcome it.  Cain did not overcome sin.  He even had his brother, Abel:(HeBeL), killed.  Abel kept the Law.  He kept the Passover, according to the Law.

GEN 4:1  And Adam knew eve his wife;  She conceived, and bore Cain, and said, I have gotten a man from YaHuWaH
GEN 4:2  And she again bare his brother Abel:(HeBeL).  Abel was a shepherd of sheep, but Cain was a tiller of the ground.
GEN 4:3  And in process of time, it came to pass, that Cain brought, from the fruit of the ground, an offering unto YaHuWaH

The same Law, which was given to Moses, was also given to Cain and Abel:(HeBeL).
Why do I say that?
Because of this Law commandment:
You must bring forth the first fruits as an offering of the ground to YaHuWaH.

GEN 4:4  Abel, himself (also) brought of the firstlings of his flock and of the fat thereof.  And YaHuWaH had respect unto Abel:(HeBeL) and to his offering:

Moreover, the Law commands the bringing of the firstlings of your flock and of the fat thereof to YaHuWaH.

GEN 4:5  But unto Cain and to his offering he had not respect.  Cain was very wroth, and his countenance fell.
GEN 4:6  And YaHuWaH said unto Cain, why art thou wroth?  Why is thy countenance fallen?
GEN 4:7  If thou doest well, shalt thou not be accepted?  If thou doest not well, sin lieth at the door.  With desire, you will rule over him.

The fact that Cain committed sin also show that Cain transgressed the Law.

GEN 4:8  And Cain talked with Abel his brother: and it came to pass, when they were in the field, that Cain rose up against Abel:(HeBeL) his brother, and slew him.

The Law also commands:
Do not kill.
Cain disobeyed that commandment, also.

He who has ears that can hear, listen to what the Spirit says to the Called:(Invited) of YaHuWaH.  If you do not have ears that can hear, Then you are still hostile to the keeping of the Law of ALaHiYM.

The writer of this page is able to understand a portion of that which is written in the Law and Writings of the Prophets, because he does not have ears, which are fully opened.  For he too is a stiffnecked person, when it comes to the performance of the Law, perfectly.  Moreover, he does understand that there are ordinances of the Law, which he can NOT even perform, because YaHuWaH's House of ALaHiYM of Jacob is not yet reestablished in Jerusalem Mount Zion.  Desire for the true peace of Jerusalem.

EXO 12:44  All menservants that are bought with money are to be circumcised.  Then they will eat thereof.
EXO 12:48  And when a stranger shall sojourn with thee, and will keep the Passover to YaHuWaH, let all his males be circumcised, and then let him come near and keep it;  And he shall be as one that is born in the land: for no uncircumcised person shall eat thereof.
EXO 12:49  (One Law) shall be to him that is home born, and unto the stranger that sojourneth among you.
EXO 12:50  Thus did all the children of Israel;  As YaHuWaH commanded Moses and Aaron, so did they.

LEV 12:1  And YaHuWaH spake unto Moses, saying,
LEV 12:2  Speak unto the children of Israel, saying, if a woman have conceived a child, and born a male child: then she shall be unclean seven days;  According to the days of the separation, for her infirmity, shall she be unclean.
LEV 12:3  Upon the eighth day the flesh of his foreskin must be circumcised.
LEV 12:4  And she shall then continue in the blood, of her purifying, three and thirty days;  She shall touch no hallowed thing, nor come into the sanctuary, until the days of her purifying be fulfilled.

Now back to:
ISA 48:12  O house of Jacob:(the 12 tribes) of Israel, listen to and obey the proclamation;  I:(we) am he:(ourselves);  I:(we) am the first, I:(we) am also, the last.

We ourselves: We are the first, and We also, the last.

ISA 48:13  Mine hand:(power of the left hand) also hath laid the foundation of the earth, and my right hand:(the right hand that is the strongest) hath spanned the heavens: when I:(who) call:(called forth) unto:(concerning) them, they stand up:(the establishing) together:(of both).

Made clear:
ISA 48:13  Moreover, (the power of the left hand) laid the foundation of the earth, (and the power of the right hand), which is the strongest, spanned the heavens: who called forth,  being employed together.

I believe that the power of the left hand is referring to Michael, one of the Cherubim.  This Cherub laid the foundations of the earth.  I believe that the right hand, which is the strongest of the two, spanned the heavens.  The Cherubim called forth:(the act of recreating) the earth and the heaven, reestablishing both.  Because, in the beginning, heaven and the earth became without form.  Heaven and the earth were created, at one time, before the existence of humankind.  Haylale and the malaks, who turned from the Law, caused heaven and the earth to become without form.  Heaven and earth were regenerated so that life could exist upon the earth again.

ISA 48:14  Gather the whole assembly, listen, obey, and understand, what is taught:(made known), even this: YaHuWaH loves executing his desire upon Babylon;  His mighty power towards the Chaldeans

ISA 48:15  I:(We), even I:(who), have spoken;  yea:(moreover), I have called:(proclaimed) him: I have brought:(caused) him, and he shall make his way:(the pathway of Israel) prosperous:(to be prosperous).

Made clear:
ISA 48:15  We, who have spoken;  Moreover proclaimed, causing the pathway of the children of Israel to be prosperous.

YaHuWaH ALaHiYM spoke.  Moreover, proclaimed the Law, thereby causing the pathway of the children of Israel to be prosperous.

The children of Israel's pathway was blessed, as long as they were obedient to the Holy Lawgivers.

ISA 48:16  Come ye near:(draw near) unto:(to) me, hear:(hear, pay attention and obey) ye this:(these commandments), which were not covered:(spoken) in secret:(secretly), from the beginning;  From the time, when it existed there;  I:(who) and now:(at this time), the Sovereign, YaHuWaH, whose Spirit sent.

ISA 48:16 made clear:
Draw near, to hear, by paying attention and obey these commandments, which were not spoken secretly from the beginning, from the time when it existed there, in the children of Israel's presence, who, at that time, the Sovereign, YaHuWaH Spirit sent.

Draw near unto the teacher of the Law, for the purpose of hearing what is taught, by paying attention and obey these commandments, which were not spoken secretly from the beginning, from the time when it existed there, in the children of Israel's presence.  At that time, the Sovereign, YaHuWaH sent a Spirit of understanding unto the children of Israel.

ISA 48:17  Thus saith YaHuWaH, the redeemer, the Holy One of Israel;  I:(We) are YaHuWaH ALaHiYM, who teacheth thee:(Israel) to profit, which leadeth thee:(Israel) by the way that thou shouldest go.

It was YaHuWaH ALaHiYM, who taught the children of Israel how to succeed, by leading them in the way they should go.

ISA 48:18  O that Israel hadst hearkened to the commandments.  Then had Israel's peace been as a river, and Israel's righteousness as the waves of the sea.

The children of Israel did not continue in obeying the Law of ALaHiYM.

ISA 48:19  Thy chosen descendants had been as the sand: and the offspring of thy bowels like the gravel thereof;  His name should not have been cut off nor destroyed from the presence of me:

The descendants of Israel became numerous and multiplied as the sand of the sea.  The offspring of Israel, who were born from the womb, were like the gravel of the sea.  Righteous honour, authority, and character of the descendants of Israel would not have been cut off, nor utterly destroyed, from the presence of YaHuWaH.

YaHuWaH ALaHiYM did not destroy the remnant of the children of Israel.  A remnant, who were of the house of Judah, returned back unto Jerusalem after the Babylon captivity.

ISA 48:20  Go ye forth of Babylon, flee ye from the Chaldeans, with a voice of singing declare ye, tell this, utter it even to the end of the earth;  Say ye, YaHuWaH redeemed these servants, who were from Jacob's house.

The descendants of the children of Israel, who returned unto Jerusalem after the Babylon captivity, were not cut off.  These descendants, from the house of Jacob, were redeemed:(delivered) by YaHuWaH ALaHiYM.

The preparations began, for the first coming of Jesus:(YaHuWSHuWAh) Christ:(MaSHiYCH), when those of the house of Judah, and the priest: the Levites, who were with the house of Judah, returned back unto Jerusalem to rebuild the temple after the 70 years of captivity in Babylon.

ISA 48:21  Jacob's house, the children of Israel thirsted not, when they were led through the dry land;  The waters flowed out of the rock: the rock opened and the waters gushed out.

ISA 48:22  The wicked is without peace, saith YaHuWaH.

Click On This Link:  Fulfilled Prophecies and Unfulfilled Prophecies, Of the Ancient House of Israel For the End Time Days, And Of Jesus Christ For the Eternal Kingdom