The strong are actually those who are in truth weak they just don't recognize their weakness. The job of the liturgy is to bring us to the point throughout the service where we take the position of the publican and not the Pharisee. Luther's advice is this first check your pulse you got a beating heart all right you're probably sending so second if you don't think that's enough run through the ten commandmentsjust start going through one by one and ask yourself have I done this thought word indeed.