I have heard and read often times the term “All Israel Will Be Saved”. Just what is the full meaning of this?
I don’t think it means every single Jew, but that representatives of all the tribes of Israel will become believers. In Romans 11:25-26 Paul has this taking place during Daniel’s 70th Week after the rapture of the Church. This is confirmed in Rev. 7:4-8 where we see 12,000 from each tribe except Dan receiving the seal of God, and in the distribution of land after the 2nd coming to all the tribes including Dan (Ezekiel 48). This is further evidence that the teaching about the lost 10 tribes is incorrect. The Lord has always preserved a remnant for Himself.