So what God's Word ACTUALLY shows, is that Jews who like to claim they only represent God's Israel, are totally and completely wrong.
Still today the majority of Israelites are made up of the ten lost tribes which God scattered out of the holy land never to return. They made up the majority of Israelites before their scattering, and still do to this day.
In Matthew 21, Lord Jesus pointed directly to the ten tribe "house of Israel" that was scattered at that time, as being the "nation" that The Gospel and Kingdom would go to. He said the kingdom would be taken from those men of Judah at Jerusalem and instead give to a "nation" that would bear its fruits (of The Gospel). This "nation" represented His Church among the scattered lost sheep of the "house of Israel" and believing Gentiles along with them. Only a remnant of Jews would convert to Jesus and be among them.
In His Message, Jesus used the idea of a 'vineyard' as that "nation"...
Matt 21:33-43
33 Hear another parable: There was a certain householder, which planted a vineyard, and hedged it round about, and digged a winepress in it, and built a tower, and let it out to husbandmen, and went into a far country:
34 And when the time of the fruit drew near, he sent his servants to the husbandmen, that they might receive the fruits of it.
Jesus is using an analogy of God as the "householder" that planted that vineyard and set it up, and then went in a far country. That is represent when God set Israel in place for this world with a Mission to accomplish for Him. And when it was time, He sent His Son (Jesus Christ) to reap the fruits of it.
35 And the husbandmen took his servants, and beat one, and killed another, and stoned another.
36 Again, he sent other servants more than the first: and they did unto them likewise.
37 But last of all he sent unto them his son, saying, "They will reverence my son."
38 But when the husbandmen saw the son, they said among themselves, "This is the heir; come, let us kill him, and let us seize on his inheritance."
39 And they caught him, and cast him out of the vineyard, and slew him.
God sent His prophets to testify to the husbandmen (rulers in Jerusalem), and they killed them. Then He sent His Son thinking surely they would receive Him, and the husbandmen KNOWING The Son was the Heir, they murdered Him upon a cross.
40 When the lord therefore of the vineyard cometh, what will he do unto those husbandmen?
Jesus then asked those scribes and Pharisees that were against Him what the Lord of the vineyard would do when He returns.
41 They say unto Him, "He will miserably destroy those wicked men, and will let out his vineyard unto other husbandmen, which shall render him the fruits in their seasons."
By that, the blind scribes and Pharisees of the Jews pronounced their own sentence.
42 Jesus saith unto them, "Did ye never read in the scriptures, The stone which the builders rejected, the same is become the head of the corner: this is the Lord's doing, and it is marvellous in our eyes?
43 Therefore say I unto you, The kingdom of God shall be taken from you, and given to a nation bringing forth the fruits thereof."
KJV
Then Jesus proclaims to those Jews that the kingdom would be taken from them, and instead given to a "nation" that would bring forth its fruits. He was pointing to the "multitude of nations" of Ephraim per the Genesis 48 prophecy which would be about the western Christian nations of history! They represent Christ's Church of BOTH believing Israelite and believing Gentile, joined together as one body. And they ESPECIALLY include the ten tribe "house of Israel" which God first scattered to Assyria while leaving the Jews in the holy land to go into their later captivity to Babylon.
In Isaiah 5, God pointed to His vineyard as being the "house of Israel", a term after the split of 1 Kings 11 used only for the northern ten tribes of Israel.
Isa 5:1-7
5 Now will I sing to my wellbeloved a song of my beloved touching his vineyard. My wellbeloved hath a vineyard in a very fruitful hill:
2 And he fenced it, and gathered out the stones thereof, and planted it with the choicest vine, and built a tower in the midst of it, and also made a winepress therein: and he looked that it should bring forth grapes, and it brought forth wild grapes.
3 And now, O inhabitants of Jerusalem, and men of Judah, judge, I pray you, betwixt Me and My vineyard.
4 What could have been done more to My vineyard, that I have not done in it? wherefore, when I looked that it should bring forth grapes, brought it forth wild grapes?
5 And now go to; I will tell you what I will do to My vineyard: I will take away the hedge thereof, and it shall be eaten up; and break down the wall thereof, and it shall be trodden down:
6 And I will lay it waste: it shall not be pruned, nor digged; but there shall come up briers and thorns: I will also command the clouds that they rain no rain upon it.
7 For the vineyard of the LORD of hosts is the house of Israel, and the men of Judah his pleasant plant: and he looked for judgment, but behold oppression; for righteousness, but behold a cry.
KJV
"For the vineyard of the LORD of hosts is the house of Israel..." -- so there it is, declared from The LORD's Own mouth.
Jer 3:17-18
17 At that time they shall call Jerusalem the throne of the LORD; and all the nations shall be gathered unto it, to the name of the LORD, to Jerusalem: neither shall they walk any more after the imagination of their evil heart.
18 In those days the house of Judah shall walk with the house of Israel, and they shall come together out of the land of the north to the land that I have given for an inheritance unto your fathers.
KJV
Do you see that above distinction between the two houses, "the house of Judah" and "the house of Israel"? Don't allow any man to tell you that means only Jews, because only that "house of Judah" involves the Jews. The rest of those there, the "house of Israel", were never known by the title of Jew, and were not even present in the holy land at Jesus' 1st coming.
So why... do today's Jews try... and claim they only represent the children of Israel? Why would they be so quick to disown their brethren of the ten tribe "house of Israel" that God scattered first? Is it just because those Jews simply don't have a clue as to where God scattered the ten tribed "house of Israel"? That's not a valid excuse, because God showed even them per His prophet Hosea, and through New Testament hints and Messages like the one in Matthew 21 that Jesus gave, and by Apostle Paul quoting from Hosea directly to Roman Gentile believers pointing to Christ's Church!
Likewise, today's pastors that keep pushing lies by the 'false Jews' that try to claim they only represent God's Israel, those pastors need to study their Bible history more also, and come to the truth about the ten tribed "house of Israel" and who they are today.