How do we know that Jesus is the Savior of the remnant?

The concept of the remnant is deeply rooted in biblical theology, especially in the prophetic literature. God has consistently preserved a faithful remnant throughout history, even during times of widespread apostasy. In Isaiah 7:14, the prophecy indicates that a virgin would conceive and bear a Son named Emmanuel, reflecting God's plan to save His people from their sins. This is echoed in Matthew 1:21, which states that Jesus would save His people from their sins, thereby fulfilling God's promise to redeem the remnant. This assurance is vital for Christians, as it emphasizes that God's plan of salvation is both sovereign and specific, targeting those whom He has chosen.