I always wondered about stuff like this. I still do, from time to time. But, once upon a time, I began the ponder the comparison that Jesus made regarding his church and the human body. My thought process had wrapped around the fact that there were so many different sects of Christianity and why, when they worship the same God, they did so in different ways, sometimes seeming to be at odds with one another. It began to occur to me that the "body" allegory began to make sense to me. What a totaly simple and maginificent way to describe His church, made up of humans, post Babel.
The body is made up of a myriad of parts, some seemingly having nothing to do with each other, yet in a fascinating way, all worked together for a common purpose; which is life.
If life is a time in which we as unique, loved, and created beings, are to be prepared for eternal life, what better way to have it done. All of us, different yet in some way dependent upon each other. Able, of course, to survive without all of our parts, but not as well as if we were whole. We have a chance to learn how well we could work together, yet be able to exist, perhaps not so well, if separated.
I think there are lots of things to think about, ponder and be willing to accomodate if we were to think of our lives, our brotherhood, and our differences in the light of His comments about the body.
So in addition to sects we have churches of black members and another of whites,
perhap of other descriptions as well. Maybe we would ponder whether that might not be a good thing, a source of comfort and strength and reinforcement of belief. Or perhaps another good example of how the "body" might just not be a little better if we were whole. But, then, that may be the promise of "now we see as throught a glass darkly...then we shall see things as they truly are".