Let’s dig deeper! The idea of “iron sharpening iron” implies there are at least two pieces of iron. Because iron is sharpened through heat and friction, it would be impossible for one tool to become sharper without the presence of the other. As it rubs against another, the piece of iron is reshaped into something beautiful and better than before. So first of all, this Proverb illustrates how important it is to be in a community of believers. We need one another to be sharpened.