It's hard to think of reggae as being a form of music that either rouses passionate emotions, or one that can serve up apocalyptic visions in the same way that, say, the Stones did on "Sympathy for the Devil". Think of reggae and you can't help but be seduced by that sexual, insistent beat that suggests a humid midday spent in the shade with something to drink and of course something to smoke too. And there's plenty of reggae that fills that stereotype. Just not this one.
"Exodus" winds itself up into a tight ball before it sets off for the promised land. From its delicate, dangerous opening as the various components take their place, to its steady, marching fade, this is a campaigning song, a determined vision set to music that brooks no opposition, that insists and demands, just like the urgent shouts of "Move!" that recur throughout.
Of course it helps that you can dance just about any way you like to this song. It's tailor-made for anything from waving your arms like a spastic scarecrow to the tightest dance-floor choreography. You don't even notice that the song never breaks step - not once. The rhythm is set in stone, the beat never lets up for a second.
What this song has that so few other songs do is inclusiveness. You can't resist it and hell, you don't even want to.