I say then, Hath God cast away his people? God forbid. For I also am an Israelite, of the seed of Abraham, of the tribe of Benjamin [Rom. 11:1].
What people is Paul talking about? Israel. In case the amillennialist might miss this, Paul is very specific. Paul himself is present proof. He is a true Israelite of genuine stock. He is descended from Abraham; he is from one of the twelve tribes of Israel, Benjamin, one of the two tribes that never seceded from the nation. He was 100 percent Israelite.
“God forbid” is more accurately, Let it not be! It is a strong negative. Even the form of the question demands a negative answer. God has not cast away Israel as a nation.
McGee, J. Vernon: Thru the Bible Commentary. electronic ed. Nashville : Thomas Nelson, 1997, c1981, S. 4:721