The Blood, Sweat and Tears song reminded me of the Francis Thompson poem "Hound of Heaven." You might want to check it out.
I have also written a poem about being relentlessly pursued (I was in grad school at the time, so it fits). I'll dig it out and post it. You'll get a kick out of it. I modeled it after Poe's "The Raven."
In other news, it's good to see the Steelers go to 3-0 (although rooting for the Vikings is a lot like rooting for the Bills these days, I imagine; seems like they find a way to lose more often than not).