After defending the value of prepared prayers the author cautions against over-reliance on them. Just as David could not fight in the armor of King Saul we are called to fight in the way God has equipped us uniquely.

The author chuckles at the resistance to using a prepared written liturgy in prayer. He compares it to being unwilling to dress in any clothing we did not make ourselves or being unwilling to drive a car we did not construct entirely by ourselves.