The concept of 'Iron Sharpens Iron' from Proverbs 27:17 illustrates how we can sharpen the countenance of a friend. The sharpening process requires closeness or proximity; without contact, whether it is a knife against a honing rod or friends keeping in touch, nothing can be sharpened. This principle extends to our relationship with God, as our proximity to Him significantly affects how we are developed into His image. Just as God's presence changed Moses' countenance, causing his face to glow, our contact with God shapes and revitalizes us, preparing us for what lies ahead. Like any tool, we and our brethren will sometimes need our countenances adjusted and at other times, a more thorough sharpening to restore and polish our edge, lifting our countenance for every good work. Proverbs 27:17 reminds us of the impact our interactions have within our families, circle of friends, and God's church, underscoring our responsibilities in these relationships.