There’s a great exchange in the movie Good Will Hunting between a kindly psychologist, played by Robin Williams, and a troubled young genius, played by Matt Damon. At one point, the psychologist says this--"So, if I asked you about art, you'd probably give me the skinny on every art book ever written. Michelangelo, you know a lot about him. Life’s work, political aspirations, sexual orientations, the whole works, right? But I'll bet you can't tell me what it smells like in the Sistine Chapel. And I'd ask you about war, you'd probably throw Shakespeare at me, right, ‘once more unto the breach dear friends.’ But you've never been near one. You've never held your best friend's head in your lap, watch him gasp his last breath, looking to you for help."
The point is that there’s a world of difference between intellectually understanding something, and truly knowing and experiencing something. Christianity is not just a collection of propositions about God but it is the all-satisfying experience of God’s love for us in Christ. How do we experience this and not just cognitively know it? In large part, through Christian community. Paul writes in Colossians, "Let the word of Christ dwell in you richly, teaching and admonishing one another in all wisdom, singing psalms and hymns and spiritual songs, with thankfulness in your hearts to God." When we gather together as a church, we impress upon each of our hearts the vivid reality of Christ’s love for us.