Romans 11:2-6 Do you not know what the Scripture says of Elijah, how he appeals to God against Israel? Lord, they have killed your prophets, they have demolished your altars, and I alone am left, and they seek my life. But what is God's reply to him? I have kept for myself seven thousand men who have not bowed the knee to Baal. So too at the present time there is a remnant, chosen by grace. But if it is by grace, it is no longer on the basis of works; otherwise grace would no longer be grace.
This was, I believe, at the time talking about those of literal Hebrew descent who would put their faith in Christ Jesus.