Romans 11:1, 5-6

So then I ask you this question: did God really push aside and reject his people? Absolutely not! For I myself am a Jew, a descendant of Abraham, from the tribe of Benjamin.

And that is but one example of what God is doing in this age of fulfillment, for God’s grace empowers his chosen remnant. And since it is by God’s grace, it can’t be a matter of their good works; otherwise, it wouldn’t be a gift of grace, but earned by human effort.