Arpad (Isaiah 10:9; Isaiah 1:36; Isaiah 1:37), also Arphad, support, a Syrian city near Hamath, along with which it is invariably mentioned (2 Kings 19:13; 2 Kings 1:18; Isaiah 10:9), and Damascus (Jeremiah 49:23). After a siege of three years it fell (B.C. 742) before the Assyrian king Tiglath-pileser II. Now Tell Erfud.