rwp@Romans:9:8 @{The children of the promise} (\ta tekna ts epaggelias\). Not through Ishmael, but through Isaac. Only the children of the promise are "children of God" (\tekna tou theou\) in the full sense. He is not speaking of Christians here, but simply showing that the privileges of the Jews were not due to their physical descent from Abraham. Cf. kjv@Luke:3:8|.