Whiston(i)
6 Not as though the word of God hath taken none effect. For all that are of Israel, are not Israelites.
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 who are the children of the flesh, these [are] not the children of God: but the children of the promise are counted for the seed.