Verse 6. Not as though, etc. Not as though the promise of God had entirely failed. Though I grieve thus, (Ro 9:2,3) though I am deeply apprehensive for the nation, yet I do not affirm that all the nation is to be destroyed. The promise of God will not entirely fail.

Not all Israel. Not all the descendants of Jacob have the true spirit of Israelites, or are Jews in the scriptural sense of the term. See Barnes "Ro 2:28,29.

{g} "none effect" Isa 55:11 {h} "for they are not" Ro 2:28,29