Romans 9:7

4 Who are Israelites; to whom pertaineth the adoption, and the glory, and the covenants, and the giving of the law, and the service of God, and the promises;

5 Whose are the fathers, and of whom as concerning the flesh Christ came, who is over all, God blessed for ever. Amen.

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.

9 For this is the word of promise, At this time will I come, and Sara shall have a son.

10 And not only this; but when Rebecca also had conceived by one, even by our father Isaac;