Interesting and well done.
After watching half of this I went back and watched the first two parts before actually watching this one right through. I have to admit you have an interesting story though I feel like you just didn't delve deep enough into it. You left it a little open and ambiguous and I get the feeling that is why many people may have been off put by the fact they struggled to really follow what this is about.
I see a lot of people criticising you about your animation style though I really don't think you deserve it. The style, while simple in some regards does just fine and you have more than enough detail to play with in my opinion and to get the story across.
Characters all show some degree of depth and difference though you could have maybe gone into more of the background of why they where offered this so called "contract". Other than that good job, I'm not personally a Christian but I appreciated the ideas and concepts behind the story.
Overall feel: 9