Jesus teaches that identity results in activity: who we are in Christ determines what we do. If you are a light, shine in the darkness of the world. Your light also should continue to grow brighter. Maturing as a Christian requires listening carefully to God’s Word and God’s preachers. The powerful preacher George Whitefield (1714–1770) offers six exhortations for how to listen to a sermon. Finally, in the church, serve like family; true family members hear what they are supposed to hear, and then do what they’re supposed to do.