I have listened to a few of the Nines and can't remember where I heard it but one quote stuck in my mind and I used it on Sunday evening. It is an observation about the gospel that Bill Hybels came up with and I love it. This is my paraphrase because I was working from memory:
"The Gospel is four letters not two.
It is never two letters-DO- it is always four- DONE.
The Gospel is something that is never about doing- it is always about what has been DONE