Amalekite Synagogues are synagogues that the Amalekites had built “after the order of the Nehors.” Aaron came to the city of Jerusalem and “first began to preach to the Amalekites” in their synagogues (Alma 21:4).
When Aaron entered one synagogue to preach, an Amalekite contended with him and asked, “Hast thou seen an angel?” Those led by the Spirit of the Lord preached “in every synagogue of the Amalekites” (Alma 21:5; Alma 21:16).