Just as the Gentile Ruth, an
ancestor of Israel’s Messiah: Matthew 1:5-16, could say to the Israelite Naomi:
thy people shall be my people, and thy
God my God. Ruth 1:16, so Gentiles in the church have been grafted into
Israel. Romans 11:17,24, Ephesians 2:12-19, Galatians 3:29
That is: all genetic Jews in the church remain members of Judah or Benjamin, the tribes they were born into. Romans 11:1 And all genetic Gentiles in the church have been grafted into Israel and so will be assigned into its tribes, as per: Ezekiel 47:21-23, Isaiah 66:21 and as seen by John in Revelation 7:9
So the entire church represents the 12 tribes of Israel. This is necessary, for all those in the church are saved by the New Covenant, which is made only with the Israel of God. Hebrews 8:10
John 10:16 refers to the “other
sheep” of believers who are Gentiles being brought into “this
fold” of Israel, which is the “one fold” of the church. God knows
who His people are, Amos 9:9, and every believer will be placed in the tribe suited
to their abilities and characteristics.
Also, all those in the church, no matter whether they are ethnic Jews, Acts 22:3 or ethnic Gentiles, Romans 16:4b, have become spiritually-circumcised Israelites, if they have undergone the spiritual circumcision of water-immersion (burial) baptism into Jesus. Romans 2:29, Philippians 3:3, Colossians 2:11-13
The books of James and Peter are addressed to the twelve tribes, which is the same as addressing people in the church, people with faith in Christ , James 1:3, that is: Christians, people who have been born again in Jesus and who anticipate His Return.
All those in the church, from every tribe, race, nation and language, are spiritually Abraham’s seed, by their faith. Galatians 3:29 And Abraham’s seed is Israel. Isaiah 41:8-10 So the entire church membership are Israelites of God. Galatians 6:16 This literally means we are the ‘Overcomers for God’, or ‘God’s Victorious people’. Seen in each of the seven Church’s of Revelation and in Isaiah 56:1-8
Not just the Jews in the church, but also the Gentiles in the church, are all spiritually Abraham’s seed of promise as Isaac was and as Jesus is the one and only true Seed. And so the peoples of the church, Jews and those from every race, nation and language, every faithful believing Christian is an heir of all the as yet, unfulfilled promises made by God to Israel in all of the Bible: Romans 8:16-18, Ephesians 1:11-14
Zechariah 8:7-8 The Lord says: I am going to rescue My people from wherever they are in the world and I will bring them back into the holy Land, to Jerusalem. They will be My people and I shall be their God in truth and righteousness.
Romans 8:18 For I consider the trials and problems of the present time are not worth the glory that is going to be revealed to us. Ref: Bible 2 – Christianforum.