The Devil's job is not that easy as it seems. Check the amount of work he does at purgatory and help him to deliver jars correctly.
Think Devil is doing nothing but spoiling people time after time No, he does way much work and his main goal is to keep the balance. See that endless amount of jars You will have to deliver some to Heaven and others you can keep for yourself. Make it quick. You need to do your job before they disappear.