Say my fighter died twice in 2 game days. Does -4 the penalty accrued from Raise Dead stack for each casting?

@JeremyECrawford Say my fighter died twice in 2 game days. Does -4 the penalty accrued from Raise Dead stack for each casting? I know spells usually don't stack, but Raise Dead sounds peculiar #DnD

— Hiten Dave (@HitD7) March 14, 2018

A spell doesn't stack with itself. #DnD https://t.co/Syfqhbz0fq

— Jeremy Crawford (@JeremyECrawford) March 14, 2018