Welcome to Mudcat, Deborah. I truly hope you join up. From time to time you may even want to sling a little mud on other 'catters when you think they've earned it.
Now about MRTBA, it is a song of life. Michael represents all of MANkind, while Sister, who may not be Michael's sister, represents all of WOMENkind. They are on a long journey, as we all are, "to the other side". Throughout the arduous journey to the distant, but unknown, promised land, Michael is the traditional hard-working-but-not-to-bright laborer. Sister, on the other hand, seemingly sits quietly and unnoticed in the background. However, it is she who provides subtle course corrections as she so skillfully trims (not with a scissors, Jeri! - How dumb of you! LOL Phil) the sails.
If she does her job correctly, there will be "milk and honey on the other side".