That last statement is still... a denial of what God said in those Scriptures I quoted.
Maybe you think what I'm talking about is some stupid claim like just being born of the seed of Israel means automatic Salvation in Christ? It does not, ALL must believe on The Savior Jesus Christ to have eternal life, and that especially means God's chosen seed of Israel.
But like Apostle Paul said in Romans 11 about his deceived Jewish brethren, God's gifts and calling are without repentance, meaning God is not going to go back on His promises to their fathers, and certainly not what He promised to David that there would never fail a man of Israel to sit upon David's throne. Jesus is not sitting upon David's throne yet today, for David's throne is an 'earthly' throne. Jesus will inherit when He comes, and it will be the throne of Israel in His future Kingdom.
What is even more amazing about the false theory about God's chosen seed that you have adopted from men's doctrines, is that you obviously fail to understand just what God did with the majority of NON-Jews of the "house of Israel" which God scattered among the Gentiles first. Those would become the "multitude of nations" of Ephraim per the prophecy in Genesis 48, meaning Christ's Church after Jesus was rejected and crucified in Jerusalem. When Jesus comes though, He is going to show that to everyone, especially to His enemies, and like He said in Ezekiel 39, all will understand how God scattered the ten tribe "house of Israel".
Ezek 39:22-29
22 So the house of Israel shall know that I am the LORD their God from that day and forward.
23 And the heathen shall know that the house of Israel went into captivity for their iniquity: because they trespassed against Me, therefore hid I My face from them, and gave them into the hand of their enemies: so fell they all by the sword.
24 According to their uncleanness and according to their transgressions have I done unto them, and hid My face from them.
25 Therefore thus saith the Lord GOD; Now will I bring again the captivity of Jacob, and have mercy upon the whole house of Israel, and will be jealous for My holy name;
26 After that they have borne their shame, and all their trespasses whereby they have trespassed against Me, when they dwelt safely in their land, and none made them afraid.
27 When I have brought them again from the people, and gathered them out of their enemies' lands, and am sanctified in them in the sight of many nations;
28 Then shall they know that I am the LORD their God, which cause them to be led into captivity among the heathen: but I have gathered them unto their own land, and have left none of them any more there.
29 Neither will I hide My face any more from them: for I have poured out My spirit upon the house of Israel, saith the Lord GOD.
KJV