I do speak 11 languages, none are of the Niger-Congo language family or Bantu language group... but, I started learning Zulu after a trip to South Africa a few years back. I believe this is Xhosa, which is a Bantu language similar to Zulu and Swahili... all spoken in South Africa. I only have a Zulu dictionary, so this is just a shot in the dark here, but this sounds like what they are singing... and I'm giving a rough translation thanks to Google Translate.
Rough Transliteration [Lyrical]
le langeli
lemiswemelele
ngitwen twabana ngenghed ayawo
obuobu
swemeswelalele
le ngezanghithe twabano
ngenghed ayawo
Rough Transcription [for grammar purposes]
le langeli lemiswemelele ngitwen twabana
ngenghed ayawo
obuobu swemeswelalele le ngezanghithe twabano
ngenghed ayawo
Rough Translation
This is the angel who called us together
no matter what
This is what we have to do with our friends
no matter what
[*note] I think most of us who like this song would LOVE it if someone who actually spoke a Bantu language would transcribe and translate this song. This is the best I could come up with... ;)
Lyrics Submitted by Ragin cajun