How does First Harvest Ministries’ interpretation of 'Gentiles' as the Ten Lost Tribes revolutionize biblical studies?

First Harvest Ministries teaches that many New Testament references to “Gentiles” (Greek: ethnos) do not mean “non‑Israelites in general,” but often point specifically to the dispersed Ten Lost Tribes of the House of Israel living among the nations.

If this lens is applied consistently, it changes several things in biblical studies:

• It reframes Paul’s mission: his “apostleship to the Gentiles” becomes a targeted mission to regather scattered Israel, not a generic turn away from Israel to outsiders.
• It reshapes how covenants are read: promises to “the nations” can be seen as Yahweh faithfully restoring all Israel (Judah and the Ten Tribes), rather than replacing Israel with a new entity.
• It affects prophecy: passages about nations receiving light or salvation become prophecies of Israel’s regathering from among those nations, clarifying continuity between Old and New Testaments.
• It challenges traditional theology: ideas like “the church versus Israel” or strict Jew/Gentile binaries are questioned in favor of a unified, restored House of Israel.

Would you like a simple example passage where this reading of “Gentiles/ethnos” dramatically changes the meaning?