Sinners voodoo

The Seven deadly sins... Those 7 sinned will obtain the Sinners Voodoo. You can pain,hurt,torture or even kill the people that you hate or get in your way, but in return... Your practically selling your soul to hell as a punishment, but.. That's only after you DIE first. Will they use the voodoo or keep there lives the same..? This is questioning the 7 sinners sanity... Do they have it or where they already insane this whole time and if not... This will surely change them.