“Let the peace of Christ rule in your hearts, to which indeed you were called in one body; and be thankful” (Colossians 3:15 NASB).  We have been invited to the peace that belongs to the body of Christ.  The Greek word for peace here is the word from which we get irenic (undisturbed). Having been incorporated into His body we are to let the peace of Messiah rule our hearts, sit on the throne of our lives.  Know that this peace, this undisturbed center, has been married to gratitude.  There is no peace without being thankful.  Thankfulness keeps Christ as as our calm center.