In his book Head Game, (Thomas Nelson, 2007, p. 309), author Tim Downs addresses this tactic of Satan He writes:
Psy-ops stands for Psychological Operations, a form of warfare as old as the art of war itself. An early example of this can be found in the battle strategies of Alexander the Great. On one occasion when his army was in full retreat from a larger army, he gave orders to his armorers to construct oversized breastplates and helmets that would fit men 7 or 8 feet tall.
As his army would retreat, he would leave these items for the pursuing army to discover. When the enemy would find the oversized gear, they would be demoralized by the thought of fighting such giant soldiers, and they would abandon their pursuit.
Satan would love to deceive us into thinking that he is bigger or greater than he really is, leaving us demoralized by fear or doubt.
It is important for us to give the Devil his due, for he does indeed have multiple “schemes”; and he has used all of them with devastating effectiveness in the lives of a great many people. However, when we compare him to the God we serve, he pales.
When we realize the truth of John’s statement that “the One who is in you is greater than the one who is in the world” (I John 4:4 NIV), then we can say with supreme confidence, as did Jesus,“Get thee behind me, Satan: thou art an offence unto me” (Matthew 16:23 KJV).