Romans 11 explains it quite nicely. 2 kinds of "Jews" - those who oppose Christ and those who have accepted the Messiah. The "Israel of God" is the Church - comprised of believing Jews and Gentiles. Unbelieving "Jews" are the broken off branches. They can be grafted back in - IF they believe. Gentiles are grafted in "amongst" the believing Jews. There's plenty of room on the olive tree!
Reminds me of 2 scriptures: Rev 2:9 & Rev 3:9.
Romans 11 explains it quite nicely. 2 kinds of "Jews" - those who oppose Christ and those who have accepted the Messiah. The "Israel of God" is the Church - comprised of believing Jews and Gentiles. Unbelieving "Jews" are the broken off branches. They can be grafted back in - IF they believe. Gentiles are grafted in "amongst" the believing Jews. There's plenty of room on the olive tree!