Jealousy and covetousness turns otherwise good people into cruel thieves. When we allow it, it disfigures us.
Cain thought it was justified to steal the life of his brother Abel.
When we feel ourselves getting jealous of what someone has, (or what we do not have), we ought to give even more to the person we are jealous of, and break the darkness that is rising in the mind.
Difficult yes, but in this way we can “Give no place to the devil.”