Started the process that made the only female apostle a whore. Only recently has that bit of self serving propaganda been debunked.

Edit: Found this. It isn't the same article I read several years ago but it examines the text of the gospels and even paul couldn't deny she was the first to spot jesus when he came out of his coma. https://uscatholic.org/articles/201603/who-framed-mary-magdalene/