this could also be about how the trivial problems we have on earth won't matter in the long run (in sufjan's opinion/belief, anyway). legs are one of the most important features of being a human, or being alive. they connect animals with the earth and bind them to mortality, so they are pretty much the opposite of heaven. so when you lose your legs, or when you have to face difficult problems, people think that that is the worst thing, etc. i think sufjan could be referring to his belief that even when you lose your "legs", heaven is still waiting for you. just a thought.
this could also be about how the trivial problems we have on earth won't matter in the long run (in sufjan's opinion/belief, anyway). legs are one of the most important features of being a human, or being alive. they connect animals with the earth and bind them to mortality, so they are pretty much the opposite of heaven. so when you lose your legs, or when you have to face difficult problems, people think that that is the worst thing, etc. i think sufjan could be referring to his belief that even when you lose your "legs", heaven is still waiting for you. just a thought.