You asked

what was the specific 'middle wall' paul was referring to for his original audience?

Adds the setting and its conversation across both testaments.

Ephesians 2:14-16

“For he is our peace, who made both one, and broke down the middle wall of partition, having abolished in his flesh the hostility, the law of commandments contained in ordinances, that he might create in himself one new man of the two, so making peace; and might reconcile them both in one body to God through the cross, having killed the hostility thereby.”

Paul, writing from prison, addresses Christians in Ephesus, a major Roman city. He's explaining how Gentiles (non-Jews) have been brought into God's family, just like Jews, and how this new unity in Christ overcomes ancient divisions.

What barriers, visible or invisible, do we experience today that need breaking down for true unity?

Then — the setting

Paul is writing to a diverse community in Ephesus, likely around 60-62 CE, during his imprisonment in Rome. The 'middle wall of partition' is widely understood to refer to the physical barrier in the Jerusalem Temple that separated the Court of the Gentiles from the inner courts accessible only to Jews. Non-Jews who crossed this barrier faced a death penalty, a stark symbol of the religious and social division between Jews and Gentiles. Beyond the physical wall, Paul also refers to the 'Law of commandments contained in ordinances' as a source of hostility, emphasizing that the Mosaic Law, while given by God, had become a barrier between people groups, defining who was 'in' and who was 'out.'

Across the Testaments

This passage builds significantly on Old Testament themes of God's covenant with Israel and his ultimate plan for all nations. While the Old Testament establishes Israel as a distinct people, it also contains prophecies (e.g., Isaiah 2:2-4, 49:6) that God's salvation would extend to the Gentiles. Paul argues that Jesus, through his death and resurrection, fulfills these prophecies by dismantling the very structures that kept Jews and Gentiles separate. The New Testament, particularly through Paul's letters, reinterprets the Law not as a means of exclusion but as a preparation for Christ, who unites all believers, making them 'one new humanity.'

Keep thinking

Read alongside it

Galatians 3:28
Paul declares that in Christ, traditional social distinctions like Jew/Gentile, slave/free, male/female lose their dividing power.
Acts 10:28
Peter's vision and subsequent visit to Cornelius illustrate the breaking down of Jewish-Gentile purity laws.
Isaiah 56:7
God's ancient promise that his house would be a 'house of prayer for all peoples' foreshadows this unity.

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