I'm afraid that Freser couldn't possibly argue more compellingly than Christ himself...and this guy set the universally transcendent pre-condition for exercising the death penalty: sinlessness.

You want me to make time to struggle with Freser's 'very heady concepts'? Now there's the rub (and the ruin) of your argument. When people like Freser struggle against truth, they tend to become wordy, 'no easy read'. Which, I suppose, is just as well, since they need a thicket of verbiage to hide their untruth.

Jesus kept it simple: sinlessness. 

If you can find me a sinless executioner, I'll slap that guy's back, and buy him a beer.