I keep hearing things like "it's hard to find music to use in a church service. Most Christian music is about God, not to God" or "when we sing in church we are to sing to the unseen audience of Jesus". Where did these catch phrases or ideas originate in terms of the modern church? (Argument can be made from scripture for both ideas, and also for the opposite idea of singing our theology to educate.) I'm trying to track down what modern movement or teacher teaches this idea: Warren, McArthur, Hybels, who?