John Piper, Contending for Our All:
One great hindrance to holiness of the Word is that we are prone to preach and write without pressing into the things we say and making them real to our own souls. Over the years words begin to come easy, and we find we can speak mysteries without standing in awe; we can speak of purity without feeling pure; we can speak of zeal without spiritual passion; we can speak of sin without sorrow; we can speak of heaven without eagerness. And the result is an increasing hardening of the spiritual life.
Words of Grace 