You are hereUCG.org / Sermons / When Iron Sharpens Iron When Iron Sharpens Iron Given on Dec 12, 2015 by Max D. Spigelmyer Listen Downloads MP3 Audio (4.87 MB) Downloads When Iron Sharpens Iron MP3 Audio (4.87 MB) × Often the phrase from Proverbs 27:17, "iron sharpens iron" is quoted. Max Spigelmyer elaborates on the deep spiritual aspects of this important principle.