G'day Prasad,
[Why aren't you quoting any more? It's not possible to tell who you're replying to, or what they said.]
Why is showing Shipman's religion relevant or important?
It isn't relevant enough to be put in the first line. If at all it has to be brought up, it should be added in a way that makes it seem insignificant.
I disagree. If it has to be brought up, it should be introduced in a way that shows it's very significant indeed. Because if we can't honestly say it's relevant, we should not be saying it at all.