What does the Bible say about the remnant of Israel?

The term 'remnant of Israel' in the Bible signifies a small group chosen by God from the sinful nation of Israel, akin to the elect. These are not merely physical descendants of Abraham, but rather spiritual descendants, as seen in Galatians 3 and Romans 9. God promises His grace to this elect remnant, preserving them from destruction and ensuring their salvation. They represent the broader group of God's elect, encompassing both Jews and Gentiles who are united in Christ, affirming that only those in Christ are counted as true children of Abraham. This remnant is a testament to God’s sovereign grace and His faithfulness in preserving a people for Himself.