Cersei: In the days before the Targaryens, the Faith Militant dispensed the justice of the seven.
High Sparrow: Well, the Faith Militant was disarmed more than two centuries ago.
Cersei: If I explained their holy purpose to my son, the king, I have no doubt he will sign a decree arming the believers you felt worthy.
High Sparrow: An army that defends the bodies and souls of the common people?
Cersei: An army in service to the Gods themselves. And to you, of course, as the chosen representative of the seven.