This document discusses the importance of prophecy and understanding over speaking in tongues in church. It notes that prophecies edify the church, while speaking in tongues without interpretation risks causing confusion among visitors. The key points are that tongues are good but prophecies are better for building up the church; speaking in tongues should only be done with understanding so as not to seem chaotic to outsiders; and all things in church should be done decently and in order to avoid confusion and represent God's peace.