It's hard to find a proper version of this Medieval Christmas Carol I like. So after listening to several, I found this one group who captured the hallowedness of it correctly.
https://soundcloud.com/strike-back-records/gaudete?utm_source=clipboard&utm_medium=text&utm_campaign=social_sharing
Here Are The Lyrics ( Latin/ English )
https://lyricstranslate.com/en/gaudete-rejoyce.html