From Piercing The Darkness page 117 by Frank E. Peretti 1989:
Destroyer scanned the town from this rooftop perch.
"If Tal is so subtle, we will be even more so. If he
depends on the prayers of God's people, then we work
all the harder to keep God's people from praying."
He chuckled a sulfurous chuckle.
"You don't know about the little imps
I requested from the Strongman: Strife,
Division, Gossip, and a host of others flooding
this town at this very moment! These
humans are only of flesh, of mud, and
I suggest there is one force stronger than
their zeal for God: their own self-righteousness!
We will make them proud, pure in their own
eyes, vindictive, unjust judges over each other,
and stir up such a noise among them that the
simplest prayer will not be uttered!"
For our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms. Ephesians 6:12 NIV