Proverbs 27:17 “As iron sharpens iron, so one man sharpens another.” If a knife is dull the purpose of being a knife makes it difficult to serve its purpose.  The same is true of you and me.  If we become lazy in our thinking or activity, we don’t serve the purpose God intended for each of us.  God wants each of us to help each other and encourage each other in gaining wisdom as we serve Him and serve each other.