Gods words clearly show (Two Israel's) below
1.) Israel of the flesh (Jews)
2.) Israel of the promised seed (Church)
Scripture clearly teaches Israel of the flesh, they aren't the children of God, it's that simple
Romans 9:6-8KJV
6 Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel: 7 Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called. 8 That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed.
Yes the Kingdom of God has been taken from National Ethnic Israel, And Given To The Church, a "Holy Nation" as clearly seen below
Matthew 21:43KJV
3 Therefore say I unto you, The kingdom of God shall be taken from you, and given to a nation bringing forth the fruits thereof.
1 Peter 2:9KJV
9 But ye are a chosen generation, a royal priesthood, an holy nation, a peculiar people; that ye should shew forth the praises of him who hath called you out of darkness into his marvellous light;
Sweet and simple. Very good.
Once Scripture began to made distinction between Israel after the flesh and the Israel of God, then it was so, that Israel after the flesh was no more the Israel of God on earth today.
The children of Israel with promise of Abraham and covenant of the God of Abraham are now the brethren of the risen God of Israel, Jesus Christ, and His nation on earth is the natural bodies of His church, which is His body and temple.
The only natural Israel of God on earth at this time, is them alive and remaining on earth in natural bodies, being circumcised of Christ in the heart.
There is no spiritual Israel of God on earth, because that will not be until the first resurrection of His church in spiritual bodies, who will then return to earth with the Lord Himself to smite the nations.
Only then will their be seen on earth the resurrected spiritual Israel of God.
The myth of a natural Israel and a spiritual Israel on earth at the same time today, is believed by them that still put faith in the flesh and not in God, whose outward circumcision of the flesh is of no profit to God today.
And those willing to believe that lie for the sake of their false prophecies of the last days today, do so from pride, not from any love for Israel after the flesh, who are but a tool for their false scholarly pursuits.