That the church and Israel are distinct entities is totally biblical.
Joh 10:16
And other sheep I have which are not of this fold; them also I must bring, and they will hear My voice; and there will be one flock and one shepherd.
Rom 9:8 That is,
those who are the children of the flesh, these are not the children of God; but the children of the promise are counted as the seed.
Rom 9:22 What if God, wanting to show His wrath and to make His power known, endured with much longsuffering the vessels of wrath prepared for destruction,
Rom 9:23 and that He might make known the riches of His glory on the vessels of mercy, which He had prepared beforehand for glory,
Rom 9:24 even us whom He called,
not of the Jews only, but also of the Gentiles?
Rom 9:25 As He says also in Hosea: "I WILL CALL THEM MY PEOPLE, WHO WERE NOT MY PEOPLE, AND HER BELOVED, WHO WAS NOT BELOVED."
Rom 9:26 "AND IT SHALL COME TO PASS IN THE PLACE WHERE IT WAS SAID TO THEM, 'YOU ARE NOT MY PEOPLE,' THERE THEY SHALL BE CALLED SONS OF THE LIVING GOD."
Rom 9:27 Isaiah also cries out concerning Israel:
"THOUGH THE NUMBER OF THE CHILDREN OF ISRAEL BE AS THE SAND OF THE SEA, THE REMNANT WILL BE SAVED.
Rom 11:1 I say then, has God cast away His people? Certainly not! For
I also am an Israelite, of the seed of Abraham, of the tribe of Benjamin.
Rom 11:2 God has not cast away His people whom He foreknew. Or do you not know what the Scripture says of Elijah, how he pleads with God against Israel, saying,
Rom 11:3 "LORD, THEY HAVE KILLED YOUR PROPHETS AND TORN DOWN YOUR ALTARS, AND I ALONE AM LEFT, AND THEY SEEK MY LIFE"?
Rom 11:4 But what does the divine response say to him? "I HAVE RESERVED FOR MYSELF SEVEN THOUSAND MEN WHO HAVE NOT BOWED THE KNEE TO BAAL."
Rom 11:5
Even so then, at this present time there is a remnant according to the election of grace.
Gal 3:16 Now to Abraham and his Seed were the promises made.
He does not say, "And to seeds," as of many, but as of one, "AND TO YOUR SEED," who is Christ.
Gal 3:17 And this I say, that the law, which was four hundred and thirty years later, cannot annul the covenant that was confirmed before by God in Christ, that it should make the promise of no effect.
Gal 3:18 For if the inheritance is of the law, it is no longer of promise; but God gave it to Abraham by promise.
Gal 3:19 What purpose then does the law serve? It was added because of transgressions, till the Seed should come to whom the promise was made; and it was appointed through angels by the hand of a mediator.
Gal 3:20 Now a mediator does not mediate for one only, but God is one.
Gal 3:21 Is the law then against the promises of God? Certainly not! For if there had been a law given which could have given life, truly righteousness would have been by the law.
Gal 3:22 But the Scripture has confined all under sin, that the promise by faith in Jesus Christ might be given to those who believe.
Gal 3:23 But before faith came, we were kept under guard by the law, kept for the faith which would afterward be revealed.
Gal 3:24 Therefore the law was our tutor to bring us to Christ, that we might be justified by faith.
Gal 3:25 But after faith has come, we are no longer under a tutor.
Gal 3:26 For you are all sons of God through faith in Christ Jesus.
Gal 3:27 For as many of you as were baptized into Christ have put on Christ.
Gal 3:28
There is neither Jew nor Greek, there is neither slave nor free, there is neither male nor female; for you are all one in Christ Jesus.
Gal 3:29 And
if you are Christ's, then you are Abraham's seed, and heirs according to the promise.
Jas 1:1 James, a bondservant of God and of the Lord Jesus Christ, To the twelve tribes which are scattered abroad: Greetings.
Jas 1:2 My brethren, count it all joy when you fall into various trials,
Jas 1:3 knowing that the testing of your faith produces patience.
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