The gospel dwells at the core of Christianity. What God has done for us in Christ is the entire basis for our faith, our hope, our love, our lives. Yet too often, in seeking to grow as a Christian, we leave the gospel back at the starting line--as if it's something we must grow beyond, as if going deeper requires moving on from it. Pastor and author J. D. Greear's (Not God Enough, Stop Asking Jesus into Your Heart, Gospel) first-ever...