So what shall happen to Israel (Gods chosen)?
Rom:11:7: What then? Israel hath not obtained that which he seeketh for; but the election hath obtained it, and the rest were blinded.
8: (According as it is written, God hath given them the spirit of slumber, eyes that they should not see, and ears that they should not hear;) unto this day.
Israel has not obtained that which he seeketh (which is Christ) because of their unbelief.
So, the bible says Israel has not just fallen for no reason, but for our sakes.
Rom:11: 11: I say then, Have they stumbled that they should fall? God forbid: but rather through their fall salvation is come unto the Gentiles, for to provoke them to jealousy.
So, Israel has fallen because of sin, but also for our sakes and our salvation.
Rom:11:30: For as ye in times past have not believed God, yet have now obtained mercy through their unbelief:
Rom:11:31: Even so have these also now not believed, that through your mercy they also may obtain mercy.
Through their fall we are saved.
Rom:11:12: Now if the fall of them be the riches of the world, and the diminishing of them the riches of the Gentiles; how much more their fulness?
13: For I speak to you Gentiles, inasmuch as I am the apostle of the Gentiles, I magnify mine office:
14: If by any means I may provoke to emulation them which are my flesh, and might save some of them
15: For if the casting away of them be the reconciling of the world, what shall the receiving of them be, but life from the dead?
The apostle Paul tells us in Rom:11:12--Rom:11:15 that the fall of them is the riches and reconciliation of the world. It goes on to say,"just think what the receiving of them will be."
In other words, we should try to imagine what great things would come out of their being received. He certainly implies hear life from the dead. In fact, it sounds like life from the dead (rapture) is in wait of their being receiving.
This idea is further confirmed by Jesus in Mat:23:37--39 Jesus telling Jerusalem, "Ye shall not see me henceforth, till ye shall say, Blessed is he that cometh in the name of the Lord."
In other words Jesus is not coming back till the Jewish people, the ones that were left desolate, are believers in him.
Mat:23:37: O Jerusalem, Jerusalem, thou that killest the prophets, and stonest them which are sent unto thee, how often would I have gathered thy children together, even as a hen gathereth her chickens under her wings, and ye would not!
38: Behold, your house is left unto you desolate.
39: For I say unto you, Ye shall not see me henceforth, till ye shall say, Blessed is he that cometh in the name of the Lord.
But the Jews also are in wait of the gentiles in Rom:11:25--26 Paul says that they are blinded until the fulness of the Gentiles come to Jesus.
Rom:11:25: For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, until the fulness of the Gentiles be come in.
26: And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
The apostle Paul shows us a mystery, conceits, self-centeredness and pride are hindering us from seeing the whole truth. It is only when we set these things aside that we can truly understand. For we all know that Jesus is the way ,the truth, and the life. There is no other way .
Jn:14:6: Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.