27 And Esaias crieth out concerning Israel, Though the number of the children of Israel be as the sand of the sea, only a remnant shall be saved.
Romans 9:27 Cross References - Worsley
Romans 11:4-6
4 But what saith the oracle of God to him? "I have reserved to myself seven thousand men, who have not bowed the knee to Baal."
5 And so in the present time also there is a remnant according to the election of grace.
6 And if by grace, it is no more of works: for then grace is no longer grace. But if of works, it is no more grace: for then work is no longer work.