They will be Mine

The simple point to be inferred from this whole issue of the Ten Lost Tribes is that the Jews are not all of Israel. God’s purpose is to let the 10 tribes which were separated in King Rehoboam’s time, to become lost to the world and the two tribes of Judah to remain visible. Deuteronomy 32:26; 2 Chronicles 10:19; Jeremiah 29:18
They both have specific tasks to fulfil, during this period of dispersion, the Church age.

Perhaps one way to identify the other Israelite tribes, besides those of Judah already known, is to look for those who fear, acknowledge and love the Creator God, live by His laws and produce the fruit of good works. James 2:24.
The Caucasian, Western nations (people groups) have been identified by the historical, linguistic, archaeological and genetic research, as having a majority of descendants of Israel/Jacob. They are also the Christian nations, so this is another proof.

According to some records, at least one tribe went eastwards and I think that South Korea, because of their amazing Christian awakening, has quite probably: Israelite origins.
Bible prophecy clearly says that all the Israel of God, who now comprise every faithful Christian, Jew and gentile, will be gathered into all of the holy Land, before Jesus Returns and Gods promises to the Patriarchs will be kept by their descendants by faith. Ezekiel 20:34-38 Genesis 17:6-8

Malachi 3:16-18 Then those who feared the Lord, talked together – the Lord listened. A record was written of those who feared Him and respected His Name.
They will be Mine, says the Lord of Hosts, My own possession for the Day that I appoint, I will spare them. Once more you will see the difference between those who serve God and the wicked apostate peoples.
Malachi 4:1-6 The Day comes; burning like a furnace, all the arrogant evildoers will be as stubble, they will be destroyed in a fiery blaze.
But you, who fear My name, the sun of righteousness will rise with healing in its wings and you will break loose, like calves released from a stall.

On the Day that I take action, you will tread down the wicked, they will be as ashes under your feet.
Remember the Laws given to Moses, keep all My commandments given to Israel at Sinai. Look; I will send you Elijah before the Day of the Lord. He will reconcile families and preserve the Land from the wrath of the Lord.

Reference: Revised English Bible, some verses abridged.

Those who trust in the Lord will rejoice in the holy Land: Isaiah 43:5-7

Isaiah 41:8-20 But you, Israel My servant – Jacob whom I have chosen, the descendants of My friend Abraham. I have summoned you from the ends of the earth and called you My servants. Have no fear, for I am with you – I am your God. I shall strengthen you with My victorious right hand.

Now, all who defy you will be humiliated. They will be as nothing and will perish. Your enemies will no longer be found.

For I, the Lord your God will help you. Have no fear Jacob, you worm, Israel you maggot, your Redeemer is the Holy One of Israel. See; I shall make of you a sharp threshing sledge. You will thresh and winnow the land and the wind will carry away all that pollutes the Holy Land. Then you will rejoice in the Lord.
The poor and needy look for water and find none. The Lord will not forsake them, He will open up springs in the hills and pools in the desert. All kinds of trees will flourish in the Land, so that everyone may see and understand that the Lord Himself has created this.

Isaiah 40:27-31 Jacob, why do you complain? You Israel, why do you say: my cause goes unheeded by my God? Do you not know, have you not heard – the Lord does not grow weary or faint and His understanding cannot be fathomed.
The Lord gives strength to the weary and those who trust in Him will soar as on eagles wings, they will run and not feel faint, march on and not be tired.
Ref. REB some verses abridged.

‘Israel My servant, the descendants of Jacob, whom I have chosen. I have summoned My servants from the ends of the earth; out of every nation.’ The Lord’s righteous people, now every faithful Christian, called out of the nations after the Lord’s Day of vengeance. They will be helped and strengthened by their God. As we know from other prophesies and the New Testament, the Lord’s servants also include people of every race, tribe, language and nation. We Christians are His people by faith.

‘Any who oppose them will be destroyed, by God’s victorious Right Hand’. The Lord Jesus will instigate this judgement/punishment of the nations; Psalms 83, Psalms 110:5-6, Luke 3:16-17, Ezekiel 30:1-5, Micah 7:10, by sending fire from the sun.

‘Jacob you worm, Israel you maggot’ The Lord has a sense of humour! The people of all the 12 tribes are unworthy, but God will fulfil His promises to the Patriarchs through their descendants who believe in God by faith; Galatians 3:26-29 and all who have accepted the Salvation offered by Jesus.

‘The storm wind sent by the Lord, will remove all that pollutes the holy Land’, This refers to the Day of the Lord’s wrath, a terrible worldwide devastation by fire, earthquakes, storms and tsunamis. Isaiah 30:25-28, Malachi 4:1, 2 Peter 3:7

‘The Lord will provide water and the Land will flourish, all will acknowledge the Lords hand in this’. Once again it will be all habitable and fertile. Ezekiel 25:5-7, Ezekiel 36:8, Isaiah 25:9, Amos 9:13, Isaiah 51:3, Isaiah 49:19

“The poor and needy”, This is a description of His people, when they first enter the Land. ‘The Lord will give them strength, they will march into their heritage and not be weary’. Psalms 107:1-43, Isaiah 35:1-10, Jer. 31:7-14, Psalms 68:24-27

Be patient, Israel, God is in control. Psalms 37:5, Jeremiah 23:24
Put your trust in the Lord, He will help and strengthen you. 2 Corinthians 6:1-2