[Secularization] advances rarely by external opposition but by a gradual process of assimilating the Christian drama, doctrines, doxology, and discipleship to the nihilistic plots of this fading age. The ultimate threat is never that the world will continue to be worldly, reducing reality to human flourishing and immanent frame, but that churches will fail in their calling to re-narrate human existence and deliver Christ to a needy world through the means of grace–that Christians will surrender merely their souls or minds to Christ while giving their bodies to the powers and the principalities of this present evil age.

Michael Horton, Our Secular Age, pg. 55