the corporate body of Christ ("The Elect") are those whom He calls into the fold.
The Church is "The Israel of God":
15 For neither is circumcision anything, nor uncircumcision, but a new creature.
16 And as many as shall walk by this rule, peace be upon them, and mercy, and upon the Israel of God. Gal 6
3 for we are the circumcision, who worship by the Spirit of God, and glory in Christ Jesus, and have no confidence in the flesh: Phil 3
...comprised of 'individual Jews':
29 but he is a Jew who is one inwardly; and circumcision is that of the heart, in the spirit not in the letter; whose praise is not of men, but of God. Ro 2