The devil looks after his own British proverb
This expression is used to say that bad people often prosper unfairly.
He achieved the high scores even though he plagiarised my work. Maybe he is the devil looks after his own.
"They say the devil looks after his baby - and boy, I'm grateful for that because I know what that boy experienced.
This phrase goes from time when people had strong religious beliefs and were puzzled as to why some people seemed to get away with wrongdoing - hence the put-down of the Devil looking after them on Earth, but hinting that they would get their comeuppance in Hell.