And Fifth Cup of wine bears the name of Elijah NAsbU Malachi 4:5 "Behold, I am going to send you Elijah the prophet before the coming of the great and terrible day of the LORD.
That seems to me a rabbinic inference from connecting those two concepts—the fact that Elijah comes at Pesach is not literally spelled out in Scripture though, is it?
I sound like a Protestant LOL