Bible Verses About Church of Israel: A spiritual church within it

Notwithstanding it can not bee that the worde of God should take none effect: for all they are not Israel, which are of Israel:

Neither are they all children, because they are the seede of Abraham: but, In Isaac shall thy seede be called:

That is, they which are the children of the flesh, are not the children of God: but the children of the promise, are counted for the seede.

God hath not cast away his people which he knew before. Know ye not what the Scripture sayth of Elias, howe hee communeth with God against Israel, saying,

Lord, they haue killed thy Prophets, and digged downe thine altars: and I am left alone, and they seeke my life?

But what saith the answere of God to him? I haue reserued vnto my selfe seuen thousand men, which haue not bowed the knee to Baal.

Euen so then at this present time is there a remnant according to the election of grace.

And if it be of grace, it is no more of workes: or els were grace no more grace: but if it be of workes, it is no more grace: or els were worke no more worke.

What then? Israel hath not obtained that he sought: but the election hath obteined it, and the rest haue bene hardened,