I'm a Christian - and I find it very funny and so does Mr J2 (an even older Christian). I wouldn't let my younger grandchildren watch it, but I would let my older, very sensible, granddaughter (14) watch it with me. It's a spoof, that's all, and doesn't affect my religious beliefs at all. In fact, if I remember rightly, there is a scene where Jesus is preaching in the far distance, the Sermon on the Mount, and it gets mixed up in a 'Chinese Whispers' sort of train - thereby pointing out that there was this chap who was preaching at that time.
I often sing snatches from 'Always look on the bright side' and I am most certainly not alone. Sorry to disappoint anyone who thinks Christians are humourless weirdos. :(