Lyric discussion by TheSpyHunterP86 

This one, to me, is semi-obvious. The zombies described are unbelievers who are stumbling through life constantly searching for temporary contentment. Without knowing it, they are crying out for something they cannot presently feel: the love of God. i.e., they are all "needing something real". The One-Armed Man is not one of them, but was once (he'll never ever look back). He has cut off his right arm since it hindered him.

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