My Chemical Romance - Heaven Help Us Lyrics Meaning

I think this is a really great song. The title gives away a lot, it being about how he wants heaven to save us. It seems to be about someone seeing the world around him and seeing it for how it is, horrible and getting worse. I agree when it says, "Angels come screaming" that they know the horrible things going on down here. "I heard you've been bleeding" is saying that someone is trying to make the world a better place, but it isn't going well for them. The chorus is pretty straight forward saying come help us down here. The second verse is him loosing it dealing with all this crap and waiting for an answer to his prayer, "can't tell if i've been breathing or sleeping or screaming or waiting for the man to call" The next part he's begging heaven to help us while referring to him now bleeding along with whoever he was talking about in the beginning, "'Cause mostly i've been sprawled on these cathedral steps and spitting out the blood and screaming someone save us."
The bridge is a cry out for help asking for prayer, asking God to help him either get to heaven, save the world from themselves. It also says, "'cause i'll give you all the nails you need, cover me in gasoline, wipe away those tears of blood again." Im not too sure, but he is probaby referring to Jesus who dies and was nailed to the cross, and sweat blood. He is also saying "cover me in gasoline" because he knows he will have to suffer a lot to make the world better as it says in the bible that christians will suffer.
And the Outro is saying the same thing and also that nobody except him and God knows his sins, and that he knows he deserves hell, but he's going to try and make a path for Go, "'cause i'll give you all the nails you need, cover me in gasoline again" maybe also it says, "cover me in gasoline" because Jesus calls christians to be a light in a dark world, and maybe some people will burn, figuritivly speaking, to lead others to Christ. Anyways, I love that song and im probalbly wrong.