What Are Some Good Ways to Start a Conversation About God with Family Members?

Questions about how to start a conversation about God with non-Christian family members, how to keep from becoming emotional when discussing faith issues with family, and the best way to alert people to the fact that they’re members of a cult.  

• What are some good ways to begin (and have) a conversation about God with non-Christian family members?
• How can I keep from becoming so emotional when discussing faith issues with extended family members whose salvation is at stake?
• What is the best way to alert people to the fact that they’re members of a cult rather than a church that follows Jesus?