I found this using "Wise Proverbs Daily" for Android, iOS and Kindle Fire!…

I found this using "Wise Proverbs Daily" for Android, iOS and Kindle Fire!

(http://www.roboticode.co.uk)

"Iron sharpens iron":

17 Iron sharpeneth iron; so a man sharpeneth the countenance of his friend. (Proverbs 27 : 17 - KJV)