empty - without their wants being relieved (Gen 31:42). The Mosaic law especially protected the widow and fatherless (Exo 22:22); the violation of it in their case by the great is a complaint of the prophets (Isa 1:17).
arms - supports, helps, on which one leans (Hos 7:15). Thou hast robbed them of their only stay. Job replies in Job 29:11-16.