Iron sharpens iron
Growth through one another
Iron sharpens iron, the proverb says, and one man sharpens another. The image is of friction that improves — two blades drawn against each other until both are keener. People are developed not only by a leader's direct input, but by one another, in the productive abrasion of honest relationship. Growth happens in the sparks.
A wise leader does not try to be the sole sharpening stone for everyone. He puts people together in ways that sharpen them — pairing, challenging, creating the honest friction that dull, isolated people never experience. There is a kind of growth that only happens between peers who will tell each other the truth. Part of the leader's job is to build those edges into the team — to engineer the encounters where iron meets iron — rather than to personally file down every blade himself.
“Jonathan, Saul's son, arose, and went to David, and strengthened his hand in God.”
— Of Jonathan strengthening David — 1 Samuel 23:16 (WEB)
People are developed by one another, not only by the leader. Wise leaders build honest friction into a team — the productive abrasion where iron sharpens iron.
“Iron sharpens iron; so a man sharpens his friend's countenance.”
The proverb locates growth in the sparks between people, not just in a leader’s input. A leader formed here releases the need to be everyone’s sole developer and trusts peers to sharpen one another. The inner work is humility about how growth actually happens.
Pair and connect people so they sharpen each other through honest relationship. Engineer the encounters where iron meets iron, rather than filing every blade yourself. Cultivate truth-telling peer relationships, not just leader-to-member input.
Leaders try to personally develop everyone and become the ceiling on their team’s growth. The blind spot is missing that some sharpening only happens between peers, not from the top.
Identify two people who would sharpen each other. This week, deliberately connect them around an honest, challenging shared task.
People grow through one another's honest friction, not just through your direct input. A leader who insists on being everyone's only sharpening stone limits the team to what he alone can give.
Are you putting people together in ways that sharpen them, or trying to be the only one who develops everyone?