Lyric discussion by Hraefncin 

I guess, I heard the song in a less biblical/religious light--oh, there's a lot of biblical imagery, but I hear it as more metaphorical than actually religious. In poetry, quite often, philosophy and religion get personified as women, so I think you could hear it as talking about his frustration with either (or both) religion and a particular person, who, maybe, represents the ideas of sin and morality to the singer.

I guess, I heard a more defiant tone to this song--in the beginning he's singing about struggling with sin (i.e. desires that he doesn't want to give into), but in the third verse, it sounds like he's talking to the person who is tempting him:

I will not speak of your sin There was a way out for him The mirror shows not Your values are all shot

I think, he's saying that the person (or institution) he's talking to has done something awful to him, and maybe you can't see it, but that person doesn't care about the singer.

And then, in the refrain, I think, he's saying that, even if he has to "crawl on [his] belly, til the sun goes down" he'll never come back to the person who hurt him. And I heard the "I took the road and I fucked it all away" more as a "fuck you" than a "I fucked up"--which I think is reinforced by the dramatic shift in the music and singing. "I'll fuck all of life, before I wear your broken crown."

Also, I think, at the "Now in this twilight how dare you speak of grace" is him saying, "how dare you talk about forgiveness--I'm never coming back to you".

So the last line "But in this twilight our choices seal our fate" is addressed at the person who, maybe, wants him back, and he's saying "you made your choice, and you have to live with it".

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