Bob Dylan does not get enough credit for this song, because the cover done by Jimi was so amazing people over look the fact that it is truely a stunning vocal track. The intro of the song hits you in such an odd way, much more different than how most guitarist are able to convey in music nowadays, a true classic. The whole song is a biblical reference to the main point conveyed in the book of issaih of the fall of babylon. The abrupt start of the song and it's bringing back of the beginning of the song, is all conveying a rebirth image. Why the song is so amazing is it presents the idea of rebirth, don't let what happened in the past effect the future. It does so with the tone of the chords and the flow of the lyrics. Truely an amazing song.