I tried googling too, no luck
I would be interested if you figure it out/find it.
I am pretty well versed on the “Jesus Rock” of the late 1960’s and 1970’s (just starting a book on it), and I haven’t come across it.
It might have been “Jesus Rock”, but it didnt have an especially “religious” sound to it. It was almost Led-Zeppelin sounding. Maybe whoever the band was just took a couple of those lyrics from the sermon?