Thanks to Nicole Miller who recommended that I listen to David Platt's T4G message. If you haven't read it or heard it, take the time to do it.
"Divine Sovereignty: The Fuel of Death-Defying Missions." A link to the transcribed message: http://thegospelcoalition.org/blogs/justintaylor/2012/04/11/tgc-6-david-platt-divine-sovereignty-the-fuel-of-death-defying-missions-revelation-51-14/
And the audio: http://t4g.org/media/2012/04/divine-sovereignty-the-fuel-of-death-defying-missions/