Paul names the question head-on before anyone else can form it: "But it is not as though the word of God has failed" (Romans 9:6).

If Israel largely rejected the Messiah, and if Israel was the people through whom God was working, does that mean God's plan collapsed? Paul's answer is precise: the failure does not belong to the word of God, because the word of God never promised what most people assumed it promised. "For they are not all Israel who are descended from Israel" (Romans 9:6). Physical descent from Jacob does not define the people of God. It never did. The promise was never simply: be born into Abraham's family, and all the covenant blessings are yours.

Paul reaches back to the very beginning of Israel's story to make the point. Abraham had two sons: Ishmael and Isaac. Both descended from Abraham. But God said, "Through Isaac your descendants will be named" (Romans 9:7; Genesis 21:12). Ishmael was excluded — not because he was less of Abraham's flesh and blood, but because the promise ran through Isaac, the son of the promise, not through every physical descendant. "That is, it is not the children of the flesh who are children of God, but the children of the promise are regarded as descendants" (Romans 9:8). The defining line was always the promise, not the bloodline.

The case of Jacob and Esau presses the point further, and it is here that Paul introduces language that has been misread in almost every generation since. "For though the twins were not yet born and had not done anything good or bad, so that God's purpose according to His choice would stand, not because of works but because of Him who calls, it was said to her, 'The older will serve the younger.' Just as it is written, 'Jacob I loved, but Esau I hated'" (Romans 9:11–13; Genesis 25:23; Malachi 1:2–3).

The choosing of Jacob over Esau before birth, before anything had been done by either — this passage has been pressed into service as a proof text for individual unconditional election to eternal salvation, as though God arbitrarily chose Jacob's soul for heaven and Esau's for hell before either drew breath. But that is not what the text says, and it is not what the Old Testament record shows.

The choice God made was a choice of covenant role and national purpose. Jacob, not Esau, would carry the line through which the covenant would run, through which the Law and the prophets and ultimately the Messiah would come. "The older will serve the younger" is a word about the relationship between two peoples — Israel and Edom — as the history of those nations confirms. The Malachian "Jacob I loved, but Esau I hated" is spoken over the two nations centuries after the twins had died (Malachi 1:2–4), not over the eternal destinies of two individuals.

God's purpose according to election is His freedom to choose, through whom and how He will accomplish His saving purposes — not a decree that overrides human response in the matter of personal salvation. The pattern through the whole of Scripture is that God's covenant family is defined by faith and obedience, not by physical birth. That pattern holds in the New Testament as surely as it held in the Old: "Know that it is those who are of faith who are sons of Abraham" (Galatians 3:7).

The word of God has not failed. What has happened is that people assumed the word promised something it never promised — automatic membership in God's people based on descent. God was always working through a purpose larger than ethnicity and a covenant defined by more than blood.