the only way that works is if you got a death sentence
I vote to have him restrained and fitted with a head enclosing chamber that is filled with insects that introduce flesh eating nematode parasites into his body and then after a sufficient time such as to totally infect his body he is placed in solitary confinement that is monitored by multiple live cameras that are streamed 24/7 to a public accessible website so anyone that wants to see the bugs eat him slowly from the inside out is able to
just making a suggestion for God