Proverbs 27:17
King James Version
“Iron sharpeneth iron; so a man sharpeneth the countenance of his friend.”
Context
14He that blesseth his friend with a loud voice, rising early in the morning, it shall be counted a curse to him.
15A continual dropping in a very rainy day and a contentious woman are alike.
16Whosoever hideth her hideth the wind, and the ointment of his right hand, bewrayeth
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 to face, so the heart of man to man.
20Hell and destruction are never full; so the eyes of man are never satisfied.