Not sure if this is what it means, but to me, i see it saying he did something some Christians and the bible interpret as "wrong" and that he's going to hell, and he's been trying to be forgiven, but they say he can't be so he's done with it all, and "let me burn" and "its what i deserve" just mean that if he can't be forgiven, then just let him to go hell beacuse he's done trying.
Not sure if this is what it means, but to me, i see it saying he did something some Christians and the bible interpret as "wrong" and that he's going to hell, and he's been trying to be forgiven, but they say he can't be so he's done with it all, and "let me burn" and "its what i deserve" just mean that if he can't be forgiven, then just let him to go hell beacuse he's done trying.