First is the sense of call. If you are called to preach, then you have an inner conviction that this is something you must do. And there are numerous resources in your Logos library that will talk about this call to preach, a call to speak on behalf of your denomination, your ordination, your church, and organization. That sense of call is as old as Abraham, where God is calling us to step out of our regular lives and to live a life that’s set apart for this work that we call the “proclamation of