Just as Christ is victor over the powers, so this victory extends to us. Spirituality is a union with Christ and his victory over the powers of evil. Spirituality is to engage in warfare with the powers and continually choose the defeat of the powers through Christ who dwells within.
-Robert Webber, Ancient-Future Faith: Rethinking Evangelicalism for a Postmodern World (Grand Rapids: Baker Books, 1999), 127