Connect Isaiah 10:21 with Romans 9:27 on the concept of a faithful remnant.

The Passages Side by Side

• Isaiah 10:21: “A remnant will return, a remnant of Jacob, to the Mighty God.”

• Romans 9:27: “Isaiah cries out concerning Israel: ‘Though the number of the Israelites be like the sand of the sea, only the remnant will be saved.’”

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Tracing the Theme of the Remnant

• First appears in Genesis 45:7 as Joseph preserves “a remnant” in Egypt.

• Moves through the prophets—see 2 Kings 19:30-31; Micah 2:12; Zephaniah 3:12-13.

• Culminates in Paul’s teaching that God preserves a “remnant chosen by grace” (Romans 11:5).

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Historical Setting in Isaiah 10

• Judah faces Assyrian aggression; most will fall, yet God promises a surviving group.

• “Mighty God” links back to Isaiah 9:6, highlighting divine rescue, not human strength.

• The remnant’s return (‘shear yashub’ in Hebrew) fulfills Isaiah’s son’s prophetic name (Isaiah 7:3).

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Paul’s Purpose in Romans 9

• Demonstrates God’s faithfulness despite Israel’s widespread unbelief.

• Shows that Scripture anticipated a limited but genuine believing core.

• Connects the ancient promise to his own day, explaining why many Jews reject Messiah while a smaller group believes.

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Key Observations

• Consistency: Both passages stress God’s initiative—He both judges and preserves.

• Quality over quantity: Salvation is not tied to national size but to covenant faith.

• Grace at work: The remnant exists only because God “cuts short the work in righteousness” (Romans 9:28, cf. Isaiah 10:22-23).

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Implications for Believers Today

• Encouragement: Divine promises never fail, even when numbers look discouraging.

• Call to faithfulness: Each generation is invited to be part of the faithful few who trust God’s revealed Word.

• Mission focus: God’s pattern of reserving a remnant urges continual evangelism, confident He is still gathering His people.