Isa 10 Verse 21 shows, however, that only a small number will do so: “A mere remnant will return.” This reminds us of Isaiah’s son Shear-jashub, who is a sign in Israel and whose name means “A Mere Remnant Will Return.” (Isaiah 7:3)

The prophecy at Isaiah 10:20-23 had a further fulfillment in the first century, as shown at Romans 9:27, 28. (Compare Isaiah 1:9; Romans 9:29.) Paul explains that in a spiritual sense, a “remnant” of Jews ‘returned’ to Jehovah in the first century C.E., inasmuch as a small number of faithful Jews became followers of Jesus Christ and began worshiping Jehovah “with spirit and truth.” (John 4:24)