Discipleship isn't a program or an event; it's a way of life. It's not for a limited time, but for our whole life. Discipleship isn't for beginners alone; it's for all believers for every day of their life. Discipleship isn't just one of the things the church does; it is what the church does. It's not just part of the advancement of God's kingdom; the existence of serious disciples is the most important evidence of God's work on earth.
--Bill Hull, The Complete Book of Discipleship: On Being and Making Followers of Christ (Colorado Springs, CO: NavPress, 2006), 24.