Randall, 'Suesser die Glocken nie klingen' is - very generally - about the spirit of Christmas:

The bells never sound sweeter than at Christmas time, it's like angels' songs about peace and joy, just as they sang that blessed night, bells with a holy sound, ring all about the earth (this last line occurs in every verse)

Hearing the bells, the Christ child hurries down to earth from Heaven, blesses the father, the mother, the child ...

Let your lovely sound carry far over the seas, that everybody may enjoy a blessed Christmas time. They all rejoice with happy song ...

There are a few misprints in the lyrics George's link takes you to:
Title: nie should have a small n
l.2: Frieden und Freud (joy, not Freund, friend)
l.10: no comma and seliger Weihnachtszeit
Merry Christmas, Susanne