The worst form of punishment for any major crime on the planet is death.
However, the second option of imprisonment is way more powerful and popular all over the world.
The most powerful form of imprisonment is called solitary confinement.
By shunning people this is what you inflict on your loved ones who no longer want to be the same religion as you,
Is this what a loving god would do, or a man made organization?
Kool-Aid anyone?