The Externally-Focused Church in Acts

I've been praying and thinking a lot about "the externally-focused church" of late.  (Click Here to see a recent one.)  In the course of that, I reviewed the book of Acts as well as notes and observations from my recent sermon series on the same and came to some fresh observations.  Specifically, I see three different "patterns" of how the earliest believers lived out an externally-focused, missional life together.