Romans 9:7 in the King James Version
Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called.
Context
6 But it is not as though the word of God has come to nothing. For they are not all Israel that are of Israel.
7 Neither, because they are Abraham’s offspring, are they all children. But, “your offspring will be accounted as from Isaac.”
8 That is, it is not the children of the flesh who are children of God, but the children of the promise are counted as heirs.