Scripture states the Church is one new man made up of both Jew and Gentile.
How can it be Israel when it is new?
Ephesians 2:14-16 KJVS
[14] For he is our peace, who hath made both one, and hath broken down the middle wall of partition between us ; [15] Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace; [16] And that he might reconcile both unto God in one body by the cross, having slain the enmity thereby:
...something new called the Church, His Body.