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.

Innie or Outie? The Externally-Focused Church

Are you an "innie" or an "outie?"  I'm not talking about your navel, though it is sort of related.  Instead, I am referring to a life-or-death "posture of the heart" for churches and church people.  When it comes to matters of faith, is your heart "internally-focused?"  Or "externally-focused?"