For a long time after this song was released on 1979’s Slow Train Coming album, live versions used lyrics which were very faithful to that recording. However, it later became a vehicle for improvised-on-the-spot lyric changes that that bore absolutely no relation to the original. In these versions, the performance would begin with a couple of standard verses and then the fun would start. This is one of many examples.
Maybe you’re highbrow or maybe you’re low
May be on earth, got nowhere to go
May be walking on the sidewalk
May be walking down on the street
But maybe you’re hot in the staggering heat
You’ve gotta serve somebody
Yeah, you’ve gotta serve somebody
It might be the devil, it might be the Lord
But you gotta serve somebody
¯_(ツ)_/¯