Rom 11:25-26 For I do not desire, brethren, that you should be ignorant of this mystery, lest you should be wise in your own opinion, that blindness in part has happened to Israel until the fullness of the Gentiles has come in. And so all Israel will be saved, as it is written: "The Deliverer will come out of Zion, And He will turn away ungodliness from Jacob;
The Israelites are still blind and it is our duty to bring to them to the saving grace of God so that just like the apostles and the devout Jews, they will believe the gospel of our Lord Jesus Christ.
Rom 11:20, 23 Well said. Because of unbelief they were broken off, and you stand by faith. Do not be haughty, but fear... And they also, if they do not continue in unbelief, will be grafted in, for God is able to graft them in again.
Because of unbelief the Israelites were cut off as the people of God. So if we are living in the last days, then before Rapture (fullness of he Gentiles), we have to show/preach to them the prophesies of our Lord Jesus Christ concerning Israel and Jerusalem so that when these prophesies come to pass they will believe the gospel and be saved.
John 14:29 "And now I have told you before it comes, that when it does come to pass, you may believe."
Luke 21:20-22 "But when you see Jerusalem surrounded by armies, then know that its desolation is near. Then let those who are in Judea flee to the mountains, let those who are in the midst of her depart, and let not those who are in the country enter her. For these are the days of vengeance, that all things which are written may be fulfilled."
All Israelites must flee Israel before WW3, and those left behind must flee into the mountains for God has given Israel and its cities to the enemies. So when they obey the words of our Lord they will not be killed, just like the warnings of God given to the Israelites through Jeremiah.
Jer 38:2-3 "Thus says the Lord : 'He who remains in this city shall die by the sword, by famine, and by pestilence; but he who goes over to the Chaldeans shall live; his life shall be as a prize to him, and he shall live.' Thus says the Lord: 'This city shall surely be given into the hand of the king of Babylon's army, which shall take it.'"
Jer 38:4 Therefore the princes said to the king, "Please, let this man be put to death, for thus he weakens the hands of the men of war who remain in this city, and the hands of all the people, by speaking such words to them. For this man does not seek the welfare of this people, but their harm."
Or are you rebelling against the prophesies of our Lord Jesus Christ by believing these false prophets who destroyed the Israelites by giving them false hope of peace in their false prophesies? Brethren, do not follow, approve, support nor quote from these false prophets who will be like Hananiah.
Jer 28:15-17 Then the prophet Jeremiah said to Hananiah the prophet, "Hear now, Hananiah, the Lord has not sent you, but you make this people trust in a lie. Therefore thus says the Lord : 'Behold, I will cast you from the face of the earth. This year you shall die, because you have taught rebellion against the Lord .'" So Hananiah the prophet died the same year in the seventh month.
Brethren, if you believe that we are now living in the last days then warn the powerful and stiffnecked Israelites of the impending fall of Israel and Jerusalem in the coming WW3, so that when they see the prophesies coming to pass they will be saved by believing in our Lord Jesus Christ.