Ephesians 2:16 and might reconcile us both to God in one body through the cross, thereby killing the hostility.
The one new man is reconciled to God in one body. This one body is the church of Jesus Christ that Jesus Christ purchased on the cross of Calvary. Although there was a remnant saved by faith in the Old Testament era, there was no Old Testament Church. There was a dividing wall between Jew and Gentile in the Old Testament era, and Jesus removed the wall by his blood, thus killing the hostility. The new covenant replaced the old covenant because Jesus made it obsolete with the new body of Christ made up of believing regenerated Jews and Gentiles. (See devotionals #20 through #25 for more on the new covenant)
Focus on Christ #39