King James Version (KJV) Authorized Version 1611
Read Full Chapter (Proverbs 27)

Proverbs 27:17-22 KJV

"Iron sharpeneth iron; so a man sharpeneth the countenance of his friend. Whoso keepeth the fig tree shall eat the fruit thereof: so he that waiteth on his master shall be honoured. As in water face answereth to face, so the heart of man to man. Hell and destruction are never full; so the eyes of man are never satisfied. As the fining pot for silver, and the furnace for gold; so is a man to his praise. Though thou shouldest bray a fool in a mortar among wheat with a pestle, yet will not his foolishness depart from him."
Proverbs Chapter 27, Verse 17-22

Proverbs 27:17-22 in Context (Verses 14–25 KJV)

14
He that blesseth his friend with a loud voice, rising early in the morning, it shall be counted a curse to him.
15
A continual dropping in a very rainy day and a contentious woman are alike.
16
Whosoever hideth her hideth the wind, and the ointment of his right hand, which bewrayeth itself.
17
Iron sharpeneth iron; so a man sharpeneth the countenance of his friend.
18
Whoso keepeth the fig tree shall eat the fruit thereof: so he that waiteth on his master shall be honoured.
19
As in water face answereth to face, so the heart of man to man.
20
Hell and destruction are never full; so the eyes of man are never satisfied.*
21
As the fining pot for silver, and the furnace for gold; so is a man to his praise.
22
Though thou shouldest bray a fool in a mortar among wheat with a pestle, yet will not his foolishness depart from him.
23
Be thou diligent to know the state of thy flocks, and look well to thy herds.*
24
For riches are not for ever: and doth the crown endure to every generation?**
25
The hay appeareth, and the tender grass sheweth itself, and herbs of the mountains are gathered.