"Divided" Paths

Currently listening to: "Two Rebels" by Honor Society

So I was at Evensong tonight and they sang "How Great Is Our God" and during one of the last choruses I noticed that one of singers broke off from the group and sang the 2nd version of the chorus on top of the rest of the band but then came together at the end.

It got me to thinking about christianity in general and how divided it is...there are so many different denomination's which I have never understood the point of. Aren't we all just going towards the same end goal? Don't we all believe in the same god? And yet, there's animosity, arguments, and all this division for no apparent reason. It just confuses me, but when they did that chorus it gave me a way to kind of solidify what I mean when I talk about the division in chrisitianty. Sure, the words are different, but it's the same chords, it's got the same message, and in the end you all finish together.