I don't generally take much notice of lyrics, being a Black Sabbath fan in the early 70s.I still like the tune and the vocals but the lyrics haven't aged well
If Geezer had written the lyrics we might have had:
It's Christmas time, and there's no need to be afraid
At Christmas time, we let in light and aren't afraid
And in our world of plenty
We can spread a lot of plenty
Throw your arms around the world
At Christmas world