איוב לט:כד פירוש: רש״י

he hollows out the ground Heb. יגמא. He makes holes (גומות) with his feet. Another explanation: יְגַמֶא is like (Gen. 24:17), “Let me please swallow (הגמיאיני).”

and he does not believe out of the great joy that he longs for battle.

that it is the sound of a shofar of battle.