17Iron sharpeneth iron; so a man sharpeneth the countenance of his friend. 18Whoso keepeth the fig tree shall eat the fruit thereof: so he that waiteth on his master shall be honoured. 19As in water face answereth to face, so the heart of man to man. 20Hell and destruction are never full; so the eyes of man are never satisfied.21As the fining pot for silver, and the furnace for gold; so is a man to his praise. 22Though thou shouldest bray a fool in a mortar among wheat with a pestle, yet will not his foolishness depart from him. 23Be thou diligent to know the state of thy flocks, and look well to thy herds.