As defined in the Gospel Coalition's Theological Vision for Ministry, which I posted last night:
Through the death and resurrection of Jesus Christ, God has come to reconcile individuals by His grace and renew the whole world by and for His glory.
I love the second "and" in this statement: the gospel is that through Jesus, God has come to reconcile individuals AND renew the whole world. It's difficult to hold tightly to both sides of this "and", but I think it's very important to do so.
If not for this"and", Jesus only gets half of the glory He's due.
That's why conjunctions matter!