The central message of this sermon is that growth and progress in the church are often accompanied by problems and challenges, but it's not the absence of these issues that determines success, but rather how they are resolved. The teacher argues that Christians should expect to face difficulties as a result of their growth and that it's not the presence or absence of problems that defines them as a community, but rather their ability to deal with them in a way that honors God. By examining the apostles' handling of a conflict between Grecian and Hebraic Jews in Acts 6, the teacher demonstrates the importance of dealing directly and gently with problems, establishing communication, taking responsibility, and trusting others to work together towards a solution. The takeaway is that by following God's way of resolving conflicts, churches can maintain unity and advance their mission despite challenges and difficulties.