When my husband Jack was in seminary he was taught to speak as the expert from a posture of strength. If you talk about weakness, struggle or failure, speak in hindsight from the place of victory won. It’s not always safe to talk about your weaknesses. You don’t want to give your detractors or enemies ammunition. (Especially in churches.)   In today's culture that mindset is changing. But, If you are an expert, why would you want to try to speak as a fellow-traveler? What might be the benefits of exposing your weaknesses, speaking of your struggles, or even failures? In the academy? In churches? Phillip Johnson, the father of…