Let the Gospel's advance be your heartbeat.
Gospel Meditations for Missions--The Evangelist's Heartbeat--Day 19
If you have a copy of "Gospel Meditations for Missions", I would highly recommend reading the devotional for Day 19. It would be silly for me to quote the entire entry for the day on this blog, so I didn't do that (though I was tempted), but one tiny quote doesn't do it justice. There is much to think about and take action on within this one little reading, so I definitely suggest checking it out for yourself.