How Do I Determine Which Topics at Work Are Worth Commenting On?

Questions about how to determine which topics at work are worth commenting on, and a good way to respond when you’re in a group Bible study and hear earnest, lifelong Christians talk excitedly about books or content creators that aren’t orthodox.  

• As someone who works in an open room with six others, where topics shift quickly and it’s hard to interject with multiple people chiming in, how do I determine which topics are worth commenting on and asking questions about?
• What is a good way to respond when you’re in a group Bible study and hear earnest, lifelong Christians talk excitedly about books or content creators that aren’t totally orthodox?