People like this general need to be ritual executed in the public square.
For his greed, cut off his hands.
For his desire, pluck out his eyes.
For his deceit, cut out his tongue.
For his malice, shatter his kneecaps.
Then for whatever other sins that can be thought of, castrastration, flaying, and crucifixion... All while casting healing magic to keep him alive as long as possible.