You are the Chosen Ones. You have been raised up from Brutality to kill the Brutals that multiply and are legion.
To this end, Zardoz, your God, gave you the gift of the gun.

The gun is good.
The penis is evil.
The penis shoots seeds, and makes new life to poison the Earth with the plague of men, as once it was.
But the gun shoots death, and purifies the Earth of the filth of Brutals.
Go forth and kill!