SECOND SPEECH OF ELIPHAZ. (Job 15:1-35) a wise man--which Job claims to be. vain knowledge--Hebrew, "windy knowledge"; literally, "of wind" (Job 8:2). In Ecc 1:14, Hebrew, "to catch wind," expresses to strive for what is vain. east wind--stronger than the previous "wind," for in that region the east wind is the most destructive of winds (Isa 27:8). Thus here,--empty violence. belly--the inward parts, the breast (Pro 18:8).