Believers and Their Seed, The Theory of Presupposed Regeneration Evaluated (Chapter 4b)

Now it is our conviction that we cannot arrive at a correct view of the seed of the covenant as long as we hesitate to accept the clear teaching of the Word of God that it is not all Israel that is called Israel, that not all the children born in the historical manifestation of God's covenant on earth are also actually children of the promise, but that the line of election and reprobation also cuts right through the visible manifestation of the covenant and makes separation, always and again...