5. Its fertile surface yields food; and yet "beneath it is turned up as it were with fire." So PLINY [Natural History, 33] observes on the ingratitude of man who repays the debt he owes the earth for food, by digging out its bowels. "Fire" was used in mining [UMBREIT]. English Version is simpler, which means precious stones which glow like fire; and so Job 28:6 follows naturally (Eze 28:14).