'Merry' wears a special grammatical holiday sweater in the song “God Rest Ye Merry, Gentlemen,” since 'merry' describes “rest” and not “gentlemen.” It really means “may you gentlemen rest happily,” and not “may you happy gentlemen now rest.” www.merriam-webster.com/wordplay/arc...

Archaic Words We Know from Christmas Songs

Hark! Yon Yule vocabulary of yore

So... "God rest ye merry" = Die Happy?

Hilarymas is completely new to me!

And 'rest' here means remain or stay, as in the French verb 'rester'?

Peter! So glad you’re here. Please ask if you have any questions — it’s very Twitter-like, but there are some interesting divergences

Oxford comma would have cleared that up

Well, yeah.

Punctuation matters.